diff --git a/cf/broken.m4 b/cf/broken.m4
index 71257ebf7..31cf611d2 100644
--- a/cf/broken.m4
+++ b/cf/broken.m4
@@ -10,7 +10,7 @@ do
 AC_CHECK_FUNC($ac_func, [
 ac_tr_func=HAVE_[]upcase($ac_func)
 AC_DEFINE_UNQUOTED($ac_tr_func)],[LIBOBJS="$LIBOBJS ${ac_func}.o"])
-# autoheader tricks *sigh*
+dnl autoheader tricks *sigh*
 : << END
 @@@funcs="$funcs $1"@@@
 END
diff --git a/cf/find-func-no-libs.m4 b/cf/find-func-no-libs.m4
index 9147b36ed..80d3c1770 100644
--- a/cf/find-func-no-libs.m4
+++ b/cf/find-func-no-libs.m4
@@ -26,7 +26,7 @@ fi
 
 eval "ac_res=\$ac_cv_funclib_$1"
 
-# autoheader tricks *sigh*
+dnl autoheader tricks *sigh*
 : << END
 @@@funcs="$funcs $1"@@@
 @@@libs="$libs $2"@@@