diff --git a/src/codechicken/lib/asm/ObfMapping.java b/src/codechicken/lib/asm/ObfMapping.java
index 07c237b..bd062ab 100644
--- a/src/codechicken/lib/asm/ObfMapping.java
+++ b/src/codechicken/lib/asm/ObfMapping.java
@@ -73,8 +73,12 @@ public class ObfMapping
             return FMLDeobfuscatingRemapper.INSTANCE.unmap(typeName);
         }
 
+        public String unmap(String typeName) {
+            return FMLDeobfuscatingRemapper.INSTANCE.map(typeName);
+        }
+
         public boolean isObf(String typeName) {
-            return !map(typeName).equals(typeName);
+            return !map(typeName).equals(typeName) || !unmap(typeName).equals(typeName);
         }
     }