diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 9835cd8..a71e529 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -1,4 +1,3 @@
-# This must be called before AC_PROG_CC
 AC_DEFUN([CHECK_OS_OPTIONS], [
 
 CFLAGS="$CFLAGS -Wall -std=gnu99 -fno-strict-aliasing"