diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java
index 08b559a8c8..32552f97bf 100644
--- a/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java
@@ -145,7 +145,7 @@ public abstract class ScriptVMMixin implements RSClient
 				client.getLogger().error("Error in JavaScriptCallback", e);
 			}
 		}
-		else
+		else if (arguments[0] instanceof Integer)
 		{
 			try
 			{