diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 7bbbe72..478464c 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -5105,9 +5105,11 @@
   QualType lhptee, rhptee;
 
   // Get the pointee types.
+  bool IsBlockPointer = false;
   if (const BlockPointerType *LHSBTy = LHSTy->getAs<BlockPointerType>()) {
     lhptee = LHSBTy->getPointeeType();
     rhptee = RHSTy->castAs<BlockPointerType>()->getPointeeType();
+    IsBlockPointer = true;
   } else {
     lhptee = LHSTy->castAs<PointerType>()->getPointeeType();
     rhptee = RHSTy->castAs<PointerType>()->getPointeeType();
@@ -5149,7 +5151,7 @@
 
   // The pointer types are compatible.
   QualType ResultTy = CompositeTy.withCVRQualifiers(MergedCVRQual);
-  if (isa<BlockPointerType>(LHSTy))
+  if (IsBlockPointer)
     ResultTy = S.Context.getBlockPointerType(ResultTy);
   else
     ResultTy = S.Context.getPointerType(ResultTy);