diff --git a/clang/lib/Driver/ToolChains/AIX.cpp b/clang/lib/Driver/ToolChains/AIX.cpp
index 369a5fc17c91c..b548919526dfc 100644
--- a/clang/lib/Driver/ToolChains/AIX.cpp
+++ b/clang/lib/Driver/ToolChains/AIX.cpp
@@ -16,6 +16,8 @@
 
 namespace aix = clang::driver::tools::aix;
 using AIX = clang::driver::toolchains::AIX;
+using namespace clang::driver;
+using namespace clang::driver::tools;
 
 using namespace llvm::opt;