--- a/net/minecraft/server/ItemSkull.java
+++ b/net/minecraft/server/ItemSkull.java
@@ -117,6 +117,7 @@
             nbttagcompound.set("SkullOwner", GameProfileSerializer.serialize(new NBTTagCompound(), gameprofile));
             return true;
         } else {
+            nbttagcompound.remove("SkullOwner"); // CraftBukkit - remove broken skulls
             return false;
         }
     }