diff --git a/CodeGen/CGExpr.cpp b/CodeGen/CGExpr.cpp
index 8aed57a..f6e772d 100644
--- a/CodeGen/CGExpr.cpp
+++ b/CodeGen/CGExpr.cpp
@@ -385,7 +385,7 @@
 LValue CodeGenFunction::EmitMemberExpr(const MemberExpr *E) {
 
   // FIXME: Handle union members.
-  if (E->getType()->isUnionType()) {
+  if (E->getBase()->getType()->isUnionType()) {
     fprintf(stderr, "Unimplemented lvalue expr!\n");
     E->dump(getContext().SourceMgr);
     llvm::Type *Ty = llvm::PointerType::get(ConvertType(E->getType()));