diff --git a/wscript b/wscript
index 79a5a9a92c..9b8578e698 100644
--- a/wscript
+++ b/wscript
@@ -387,7 +387,7 @@ def set_compiler_flags (conf,opt):
     c_flags.extend(('-Wstrict-prototypes', '-Wmissing-prototypes'))
     cxx_flags.append('-Woverloaded-virtual')
     if (not is_clang and not platform == "darwin"):
-        cxx_flags.extend('-Wno-unused-local-typedefs')
+        cxx_flags.append('-Wno-unused-local-typedefs')
 
     #
     # more boilerplate