diff --git a/llvm/lib/Analysis/DebugInfo.cpp b/llvm/lib/Analysis/DebugInfo.cpp
index 1436aa9..81d0ddb 100644
--- a/llvm/lib/Analysis/DebugInfo.cpp
+++ b/llvm/lib/Analysis/DebugInfo.cpp
@@ -116,7 +116,7 @@
     return 0;
 
   if (Elt < DbgNode->getNumElements())
-      return dyn_cast<GlobalVariable>(DbgNode->getElement(Elt));
+      return dyn_cast_or_null<GlobalVariable>(DbgNode->getElement(Elt));
   return 0;
 }