diff --git a/rtl/eclrtl/eclregex.cpp b/rtl/eclrtl/eclregex.cpp
index a45552048d1..88bfded0a98 100644
--- a/rtl/eclrtl/eclregex.cpp
+++ b/rtl/eclrtl/eclregex.cpp
@@ -281,7 +281,7 @@ static void initMaxCacheSize()
     }
 
     if (cacheMaxSize > 0)
-        compiledStrRegExprCache.setMaxCacheSize(cacheMaxSize);
+        compiledStrRegExprCache.setMaxCacheSize(cacheMaxSize); // NOTE: Called from init code - no need to lock
     else
         compiledCacheEnabled = false;
 }