diff --git a/lib/Analysis/CheckSizeofPointer.cpp b/lib/Analysis/CheckSizeofPointer.cpp
index 1aab3c9..174beef 100644
--- a/lib/Analysis/CheckSizeofPointer.cpp
+++ b/lib/Analysis/CheckSizeofPointer.cpp
@@ -54,7 +54,7 @@
     // because people know what they are doing when they intentionally 
     // dereference the pointer.
     Expr *ArgEx = E->getArgumentExpr();
-    if (!isa<DeclRefExpr>(ArgEx))
+    if (!isa<DeclRefExpr>(ArgEx->IgnoreParens()))
       return;
 
     SourceRange R = ArgEx->getSourceRange();