diff --git a/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java b/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
index aa9eb7b1a2..f0f8a68d7a 100644
--- a/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
+++ b/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
@@ -49,9 +49,10 @@ public class RelaunchClassLoader extends URLClassLoader
 
         // standard transformer exclusions
         addTransformerExclusion("javax.");
-        addTransformerExclusion("cpw.mods.fml.");
         addTransformerExclusion("org.objectweb.asm.");
         addTransformerExclusion("com.google.common.");
+        addTransformerExclusion("cpw.mods.fml.common.asm.SideOnly");
+        addTransformerExclusion("cpw.mods.fml.common.Side");
     }
 
     public void registerTransformer(String transformerClassName)