diff --git a/History.md b/History.md
index 57df902afe..493ea189ff 100644
--- a/History.md
+++ b/History.md
@@ -4,6 +4,7 @@ unreleased
   * deps: accepts@~1.3.8
     - deps: mime-types@~2.1.34
     - deps: negotiator@0.6.3
+  * pref: remove unnecessary regexp for trust proxy
 
 4.17.2 / 2021-12-16
 ===================
diff --git a/lib/utils.js b/lib/utils.js
index a9ef259ff1..7797b06853 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -228,7 +228,8 @@ exports.compileTrust = function(val) {
 
   if (typeof val === 'string') {
     // Support comma-separated values
-    val = val.split(/ *, */);
+    val = val.split(',')
+      .map(function (v) { return v.trim() })
   }
 
   return proxyaddr.compile(val || []);