diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index f6d941a..2246327 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -77,7 +77,7 @@
             return prefix
 
     elif os.name == "mac":
-        if platform_specific:
+        if plat_specific:
             if standard_lib:
                 return os.path.join(EXEC_PREFIX, "Mac", "Plugins")
             else: