diff --git a/lib/Bytecode/Writer/ConstantWriter.cpp b/lib/Bytecode/Writer/ConstantWriter.cpp
index 303672d..5813ea2 100644
--- a/lib/Bytecode/Writer/ConstantWriter.cpp
+++ b/lib/Bytecode/Writer/ConstantWriter.cpp
@@ -175,9 +175,7 @@
   }
 
   case Type::PointerTyID: {
-    const ConstantPointer *CPP = cast<ConstantPointer>(CPV);
-    assert(!isa<ConstantPointerNull>(CPP) && "Null should be already emitted!");
-    const ConstantPointerRef *CPR = cast<ConstantPointerRef>(CPP);
+    const ConstantPointerRef *CPR = cast<ConstantPointerRef>(CPV);
     int Slot = Table.getSlot((Value*)CPR->getValue());
     assert(Slot != -1 && "Global used but not available!!");
     output_vbr((unsigned)Slot, Out);