diff --git a/m-mutex.h b/m-mutex.h
index 036d8ca5..930ba124 100644
--- a/m-mutex.h
+++ b/m-mutex.h
@@ -28,8 +28,6 @@
 #include <assert.h>
 #include "m-core.h"
 
-//FIXME: static inline versions could be cleaner?
-
 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L    \
   && !defined(__STDC_NO_THREADS__)