diff --git a/usermods/usermod_v2_RF433/usermod_v2_RF433.cpp b/usermods/usermod_v2_RF433/usermod_v2_RF433.cpp
index 9ac6c416d1..ed3d5eb26f 100644
--- a/usermods/usermod_v2_RF433/usermod_v2_RF433.cpp
+++ b/usermods/usermod_v2_RF433/usermod_v2_RF433.cpp
@@ -124,7 +124,7 @@ class RF433Usermod : public Usermod
     char objKey[14];
     bool parsed = false;
 
-    if (!requestJSONBufferLock(22)) return false;
+    if (!requestJSONBufferLock(JSON_LOCK_REMOTE)) return false;
 
     sprintf_P(objKey, PSTR("\"%d\":"), button);
 
diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
index 063d3a6bb3..34b619ea36 100644
--- a/wled00/FX_2Dfcn.cpp
+++ b/wled00/FX_2Dfcn.cpp
@@ -74,7 +74,7 @@ void WS2812FX::setUpMatrix() {
       size_t  gapSize = 0;
       int8_t *gapTable = nullptr;
 
-      if (isFile && requestJSONBufferLock(20)) {
+      if (isFile && requestJSONBufferLock(JSON_LOCK_LEDGAP)) {
         DEBUG_PRINT(F("Reading LED gap from "));
         DEBUG_PRINTLN(fileName);
         // read the array into global JSON buffer
diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 3f357daa29..a9b1967889 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -1982,7 +1982,7 @@ bool WS2812FX::deserializeMap(unsigned n) {
     return false;
   }
 
-  if (!isFile || !requestJSONBufferLock(7)) return false;
+  if (!isFile || !requestJSONBufferLock(JSON_LOCK_LEDMAP)) return false;
 
   StaticJsonDocument<64> filter;
   filter[F("width")]  = true;
diff --git a/wled00/cfg.cpp b/wled00/cfg.cpp
index e30be759b6..f799b555af 100644
--- a/wled00/cfg.cpp
+++ b/wled00/cfg.cpp
@@ -790,7 +790,7 @@ void resetConfig() {
 bool deserializeConfigFromFS() {
   [[maybe_unused]] bool success = deserializeConfigSec();
 
-  if (!requestJSONBufferLock(1)) return false;
+  if (!requestJSONBufferLock(JSON_LOCK_CFG_DES)) return false;
 
   DEBUG_PRINTLN(F("Reading settings from /cfg.json..."));
 
@@ -811,7 +811,7 @@ void serializeConfigToFS() {
 
   DEBUG_PRINTLN(F("Writing settings to /cfg.json..."));
 
-  if (!requestJSONBufferLock(2)) return;
+  if (!requestJSONBufferLock(JSON_LOCK_CFG_SER)) return;
 
   JsonObject root = pDoc->to<JsonObject>();
 
@@ -1255,7 +1255,7 @@ static const char s_wsec_json[] PROGMEM = "/wsec.json";
 bool deserializeConfigSec() {
   DEBUG_PRINTLN(F("Reading settings from /wsec.json..."));
 
-  if (!requestJSONBufferLock(3)) return false;
+  if (!requestJSONBufferLock(JSON_LOCK_CFG_SEC_DES)) return false;
 
   bool success = readObjectFromFile(s_wsec_json, nullptr, pDoc);
   if (!success) {
@@ -1309,7 +1309,7 @@ bool deserializeConfigSec() {
 void serializeConfigSec() {
   DEBUG_PRINTLN(F("Writing settings to /wsec.json..."));
 
-  if (!requestJSONBufferLock(4)) return;
+  if (!requestJSONBufferLock(JSON_LOCK_CFG_SEC_SER)) return;
 
   JsonObject root = pDoc->to<JsonObject>();
 
diff --git a/wled00/const.h b/wled00/const.h
index 9067d9b16c..3c50ddbcc0 100644
--- a/wled00/const.h
+++ b/wled00/const.h
@@ -441,6 +441,31 @@ static_assert(WLED_MAX_BUSSES <= 32, "WLED_MAX_BUSSES exceeds hard limit");
 #define ERR_OVERCURRENT 31  // An attached current sensor has measured a current above the threshold (not implemented)
 #define ERR_UNDERVOLT   32  // An attached voltmeter has measured a voltage below the threshold (not implemented)
 
+// JSON buffer lock owners
+#define JSON_LOCK_UNKNOWN        255
+#define JSON_LOCK_CFG_DES          1
+#define JSON_LOCK_CFG_SER          2
+#define JSON_LOCK_CFG_SEC_DES      3
+#define JSON_LOCK_CFG_SEC_SER      4
+#define JSON_LOCK_SETTINGS         5
+#define JSON_LOCK_XML              6
+#define JSON_LOCK_LEDMAP           7
+// unused                          8
+#define JSON_LOCK_PRESET_LOAD      9
+#define JSON_LOCK_PRESET_SAVE     10
+#define JSON_LOCK_WS_RECEIVE      11
+#define JSON_LOCK_WS_SEND         12
+#define JSON_LOCK_IR              13
+#define JSON_LOCK_SERVER          14
+#define JSON_LOCK_MQTT            15
+#define JSON_LOCK_SERIAL          16
+#define JSON_LOCK_SERVEJSON       17
+#define JSON_LOCK_NOTIFY          18
+#define JSON_LOCK_PRESET_NAME     19
+#define JSON_LOCK_LEDGAP          20
+#define JSON_LOCK_LEDMAP_ENUM     21
+#define JSON_LOCK_REMOTE          22
+
 // Timer mode types
 #define NL_MODE_SET               0            //After nightlight time elapsed, set to target brightness
 #define NL_MODE_FADE              1            //Fade to target brightness gradually
diff --git a/wled00/fcn_declare.h b/wled00/fcn_declare.h
index 4bbedfacb0..86e50278fc 100644
--- a/wled00/fcn_declare.h
+++ b/wled00/fcn_declare.h
@@ -394,7 +394,7 @@ size_t printSetFormIndex(Print& settingsScript, const char* key, int index);
 size_t printSetClassElementHTML(Print& settingsScript, const char* key, const int index, const char* val);
 void prepareHostname(char* hostname);
 [[gnu::pure]] bool isAsterisksOnly(const char* str, byte maxLen);
-bool requestJSONBufferLock(uint8_t moduleID=255);
+bool requestJSONBufferLock(uint8_t moduleID=JSON_LOCK_UNKNOWN);
 void releaseJSONBufferLock();
 uint8_t extractModeName(uint8_t mode, const char *src, char *dest, uint8_t maxLen);
 uint8_t extractModeSlider(uint8_t mode, uint8_t slider, char *dest, uint8_t maxLen, uint8_t *var = nullptr);
@@ -486,7 +486,7 @@ void bootloopCheckOTA(); // swap boot image if bootloop is detected instead of r
 class JSONBufferGuard {
   bool holding_lock;
   public:
-    inline JSONBufferGuard(uint8_t module=255) : holding_lock(requestJSONBufferLock(module)) {};
+    inline JSONBufferGuard(uint8_t module=JSON_LOCK_UNKNOWN) : holding_lock(requestJSONBufferLock(module)) {};
     inline ~JSONBufferGuard() { if (holding_lock) releaseJSONBufferLock(); };
     inline JSONBufferGuard(const JSONBufferGuard&) = delete; // Noncopyable
     inline JSONBufferGuard& operator=(const JSONBufferGuard&) = delete;
diff --git a/wled00/ir.cpp b/wled00/ir.cpp
index b2fec76f1f..fe0950ab14 100644
--- a/wled00/ir.cpp
+++ b/wled00/ir.cpp
@@ -559,7 +559,7 @@ static void decodeIRJson(uint32_t code)
   JsonObject fdo;
   JsonObject jsonCmdObj;
 
-  if (!requestJSONBufferLock(13)) return;
+  if (!requestJSONBufferLock(JSON_LOCK_IR)) return;
 
   sprintf_P(objKey, PSTR("\"0x%lX\":"), (unsigned long)code);
   strcpy_P(fileName, PSTR("/ir.json")); // for FS.exists()
diff --git a/wled00/json.cpp b/wled00/json.cpp
index f23080135f..6f5a5fc764 100644
--- a/wled00/json.cpp
+++ b/wled00/json.cpp
@@ -1140,7 +1140,7 @@ void serveJson(AsyncWebServerRequest* request)
     return;
   }
 
-  if (!requestJSONBufferLock(17)) {
+  if (!requestJSONBufferLock(JSON_LOCK_SERVEJSON)) {
     request->deferResponse();    
     return;
   }
diff --git a/wled00/mqtt.cpp b/wled00/mqtt.cpp
index ea42297bf7..d64dc29d9b 100644
--- a/wled00/mqtt.cpp
+++ b/wled00/mqtt.cpp
@@ -113,7 +113,7 @@ static void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProp
     colorFromDecOrHexString(colPri, payloadStr);
     colorUpdated(CALL_MODE_DIRECT_CHANGE);
   } else if (strcmp_P(topic, PSTR("/api")) == 0) {
-    if (requestJSONBufferLock(15)) {
+    if (requestJSONBufferLock(JSON_LOCK_MQTT)) {
       if (payloadStr[0] == '{') { //JSON API
         deserializeJson(*pDoc, payloadStr);
         deserializeState(pDoc->as<JsonObject>());
diff --git a/wled00/presets.cpp b/wled00/presets.cpp
index fed2c1ed92..9023baf344 100644
--- a/wled00/presets.cpp
+++ b/wled00/presets.cpp
@@ -32,7 +32,7 @@ static void doSaveState() {
   unsigned long maxWait = millis() + strip.getFrameTime();
   while (strip.isUpdating() && millis() < maxWait) delay(1); // wait for strip to finish updating, accessing FS during sendout causes glitches
 
-  if (!requestJSONBufferLock(10)) return;
+  if (!requestJSONBufferLock(JSON_LOCK_PRESET_SAVE)) return;
 
   initPresetsFile(); // just in case if someone deleted presets.json using /edit
   JsonObject sObj = pDoc->to<JsonObject>();
@@ -86,7 +86,7 @@ static void doSaveState() {
 
 bool getPresetName(byte index, String& name)
 {
-  if (!requestJSONBufferLock(19)) return false;
+  if (!requestJSONBufferLock(JSON_LOCK_PRESET_NAME)) return false;
   bool presetExists = false;
   if (readObjectFromFileUsingId(getPresetsFileName(), index, pDoc)) {
     JsonObject fdo = pDoc->as<JsonObject>();
@@ -152,7 +152,7 @@ void handlePresets()
     return;
   }
 
-  if (presetToApply == 0 || !requestJSONBufferLock(9)) return; // no preset waiting to apply, or JSON buffer is already allocated, return to loop until free
+  if (presetToApply == 0 || !requestJSONBufferLock(JSON_LOCK_PRESET_LOAD)) return; // no preset waiting to apply, or JSON buffer is already allocated, return to loop until free
 
   bool changePreset = false;
   uint8_t tmpPreset = presetToApply; // store temporary since deserializeState() may call applyPreset()
diff --git a/wled00/remote.cpp b/wled00/remote.cpp
index 14c3c0d01d..2232498bec 100644
--- a/wled00/remote.cpp
+++ b/wled00/remote.cpp
@@ -120,7 +120,7 @@ static bool remoteJson(int button)
   char objKey[10];
   bool parsed = false;
 
-  if (!requestJSONBufferLock(22)) return false;
+  if (!requestJSONBufferLock(JSON_LOCK_REMOTE)) return false;
 
   sprintf_P(objKey, PSTR("\"%d\":"), button);
 
diff --git a/wled00/set.cpp b/wled00/set.cpp
index 2a633bf07d..d0864acd1d 100644
--- a/wled00/set.cpp
+++ b/wled00/set.cpp
@@ -651,7 +651,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
   //USERMODS
   if (subPage == SUBPAGE_UM)
   {
-    if (!requestJSONBufferLock(5)) {
+    if (!requestJSONBufferLock(JSON_LOCK_SETTINGS)) {
       request->deferResponse();
       return;
     }
diff --git a/wled00/udp.cpp b/wled00/udp.cpp
index 26a80ac349..82f025b211 100644
--- a/wled00/udp.cpp
+++ b/wled00/udp.cpp
@@ -646,7 +646,7 @@ void handleNotifications()
   // API over UDP
   udpIn[packetSize] = '\0';
 
-  if (requestJSONBufferLock(18)) {
+  if (requestJSONBufferLock(JSON_LOCK_NOTIFY)) {
     if (udpIn[0] >= 'A' && udpIn[0] <= 'Z') { //HTTP API
       String apireq = "win"; apireq += '&'; // reduce flash string usage
       apireq += (char*)udpIn;
diff --git a/wled00/util.cpp b/wled00/util.cpp
index 1330bb6c7e..0e0c0f2093 100644
--- a/wled00/util.cpp
+++ b/wled00/util.cpp
@@ -561,7 +561,7 @@ void enumerateLedmaps() {
       ledMaps |= 1 << i;
 
       #ifndef ESP8266
-      if (requestJSONBufferLock(21)) {
+      if (requestJSONBufferLock(JSON_LOCK_LEDMAP_ENUM)) {
         if (readObjectFromFile(fileName, nullptr, pDoc, &filter)) {
           size_t len = 0;
           JsonObject root = pDoc->as<JsonObject>();
diff --git a/wled00/wled_serial.cpp b/wled00/wled_serial.cpp
index a0e59c531f..7675976ba8 100644
--- a/wled00/wled_serial.cpp
+++ b/wled00/wled_serial.cpp
@@ -102,7 +102,7 @@ void handleSerial()
         else if (next == 'O')  { continuousSendLED = true; } // Enable Continuous Serial Streaming
         else if (next == '{')  { //JSON API
           bool verboseResponse = false;
-          if (!requestJSONBufferLock(16)) {
+          if (!requestJSONBufferLock(JSON_LOCK_SERIAL)) {
             Serial.printf_P(PSTR("{\"error\":%d}\n"), ERR_NOBUF);
             return;
           }
diff --git a/wled00/wled_server.cpp b/wled00/wled_server.cpp
index ffb259b858..ace5728347 100644
--- a/wled00/wled_server.cpp
+++ b/wled00/wled_server.cpp
@@ -395,7 +395,7 @@ void initServer()
     bool verboseResponse = false;
     bool isConfig = false;
 
-    if (!requestJSONBufferLock(14)) {
+    if (!requestJSONBufferLock(JSON_LOCK_SERVER)) {
       request->deferResponse();
       return;
     }
diff --git a/wled00/ws.cpp b/wled00/ws.cpp
index 873261beec..6d74a5a0b8 100644
--- a/wled00/ws.cpp
+++ b/wled00/ws.cpp
@@ -42,7 +42,7 @@ void wsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventTyp
         }
 
         bool verboseResponse = false;
-        if (!requestJSONBufferLock(11)) {
+        if (!requestJSONBufferLock(JSON_LOCK_WS_RECEIVE)) {
           client->text(F("{\"error\":3}")); // ERR_NOBUF
           return;
         }
@@ -136,7 +136,7 @@ void sendDataWs(AsyncWebSocketClient * client)
 {
   if (!ws.count()) return;
 
-  if (!requestJSONBufferLock(12)) {
+  if (!requestJSONBufferLock(JSON_LOCK_WS_SEND)) {
     const char* error = PSTR("{\"error\":3}");
     if (client) {
       client->text(FPSTR(error)); // ERR_NOBUF
diff --git a/wled00/xml.cpp b/wled00/xml.cpp
index 194256d82e..4efdecaaac 100644
--- a/wled00/xml.cpp
+++ b/wled00/xml.cpp
@@ -99,7 +99,7 @@ void appendGPIOinfo(Print& settingsScript)
     settingsScript.printf_P(PSTR(",%d,%d"), spi_mosi, spi_sclk);
   }
   // usermod pin reservations will become unnecessary when settings pages will read cfg.json directly
-  if (requestJSONBufferLock(6)) {
+  if (requestJSONBufferLock(JSON_LOCK_XML)) {
     // if we can't allocate JSON buffer ignore usermod pins
     JsonObject mods = pDoc->createNestedObject("um");
     UsermodManager::addToConfig(mods);