diff --git a/src/main/java/net/runelite/deob/deobfuscators/rename/MappingExecutorUtil.java b/src/main/java/net/runelite/deob/deobfuscators/rename/MappingExecutorUtil.java
index c1f702bc47..a17b9a3a6a 100644
--- a/src/main/java/net/runelite/deob/deobfuscators/rename/MappingExecutorUtil.java
+++ b/src/main/java/net/runelite/deob/deobfuscators/rename/MappingExecutorUtil.java
@@ -135,7 +135,7 @@ public class MappingExecutorUtil
 			return false;
 		}
 		
-		if (className.startsWith("java/") || className.startsWith("netscape/"))
+		if (className.startsWith("java/") || className.startsWith("netscape/") || className.startsWith("javax/"))
 			return false;
 		
 		return true;