diff --git a/scripts/mk_util.py b/scripts/mk_util.py
index d425f6576..883492614 100644
--- a/scripts/mk_util.py
+++ b/scripts/mk_util.py
@@ -639,7 +639,7 @@ def is_CXX_gpp():
     return is_compiler(CXX, 'g++')
 
 def is_clang_in_gpp_form(cc):
-    version_string = subprocess.check_output([cc, '--version'])
+    version_string = check_output([cc, '--version'])
     return str(version_string).find('clang') != -1
 
 def is_CXX_clangpp():