diff --git a/AMBuildScript b/AMBuildScript
index a572edf..a2081bc 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -178,12 +178,12 @@ class MMSConfig(object):
         cxx.cflags += ['-mfpmath=sse']
       if cxx.family == 'clang':
         if cfg.version >= 'clang-3.6':
-          cfg.cxxflags += ['-Wno-inconsistent-missing-override']
-          cfg.cxxflags += ['-Wno-implicit-exception-spec-mismatch']
-        if cfg.version >= 'apple-clang-5.1' or cfg.version >= 'clang-3.4':
-          cfg.cxxflags += ['-Wno-deprecated-register']
+          cxx.cxxflags += ['-Wno-inconsistent-missing-override']
+          cxx.cxxflags += ['-Wno-implicit-exception-spec-mismatch']
+        if cxx.version >= 'apple-clang-5.1' or cfg.version >= 'clang-3.4':
+          cxx.cxxflags += ['-Wno-deprecated-register']
         else:
-          cfg.cxxflags += ['-Wno-deprecated']
+          cxx.cxxflags += ['-Wno-deprecated']
 
     elif cxx.like('msvc'):
       if builder.options.debug == '1':