diff --git a/identify/extensions.py b/identify/extensions.py
index 9016e6d..1b1f7fa 100644
--- a/identify/extensions.py
+++ b/identify/extensions.py
@@ -114,7 +114,7 @@
     'liquid': {'text', 'liquid'},
     'lr': {'text', 'lektor'},
     'lua': {'text', 'lua'},
-    'm': {'text', 'c', 'objective-c'},
+    'm': {'text', 'objective-c'},
     'manifest': {'text', 'manifest'},
     'map': {'text', 'map'},
     'markdown': {'text', 'markdown'},