diff --git a/schema/config-schema.json b/schema/config-schema.json
index da64dbf01..3de0e7391 100644
--- a/schema/config-schema.json
+++ b/schema/config-schema.json
@@ -24,7 +24,7 @@
       "$ref": "defs-config.json#/definitions/rootfs"
     },
     "history": {
-	  "type": "array",
+      "type": "array",
       "items": {
         "$ref": "defs-config.json#/definitions/history"
       }
diff --git a/schema/defs-config.json b/schema/defs-config.json
index 2faf3c656..dbf3b7237 100644
--- a/schema/defs-config.json
+++ b/schema/defs-config.json
@@ -64,7 +64,7 @@
       "properties": {
         "created": {
           "type": "string",
-		  "format": "date-time"
+          "format": "date-time"
         },
         "author": {
           "type": "string"