diff --git a/clang/lib/GR/SymbolManager.cpp b/clang/lib/GR/SymbolManager.cpp
index 8dcdb14..95df307 100644
--- a/clang/lib/GR/SymbolManager.cpp
+++ b/clang/lib/GR/SymbolManager.cpp
@@ -18,6 +18,7 @@
 #include "llvm/Support/raw_ostream.h"
 
 using namespace clang;
+using namespace GR;
 
 void SymExpr::dump() const {
   dumpToStream(llvm::errs());