diff --git a/fml/common/cpw/mods/fml/common/asm/FMLSanityChecker.java b/fml/common/cpw/mods/fml/common/asm/FMLSanityChecker.java
index e25f92fd8a..0be5ffb084 100644
--- a/fml/common/cpw/mods/fml/common/asm/FMLSanityChecker.java
+++ b/fml/common/cpw/mods/fml/common/asm/FMLSanityChecker.java
@@ -123,7 +123,7 @@ public class FMLSanityChecker implements IFMLCallHook
         boolean goodMC = false;
         try
         {
-            Class cbr = Class.forName("net.minecraft.server.MinecraftServer",true, cl);
+            Class cbr = Class.forName("net.minecraft.server.MinecraftServer",false, cl);
             codeSource = cbr.getProtectionDomain().getCodeSource();
         }
         catch (Exception e)