diff --git a/m4/check-package.m4 b/m4/check-package.m4
index 0ab4f1eb4b819ef3fce685ee085692e70a8bea9f..6bb1432ec742449225f341b21597cd075f4084ed 100644
--- a/m4/check-package.m4
+++ b/m4/check-package.m4
@@ -29,10 +29,8 @@ AC_HELP_STRING([--without-$1], [disable use of package $1
 	[m4_bpatsubst([$1],-,_)_DISABLE=no])
 ])
 AC_DEFUN(ALBERT_CHECK_PACKAGE,
-[AC_REQUIRE([AC_SET_PREFIX])
-#
-# foobar
-#
+[dnl AC_REQUIRE([AC_SET_PREFIX])
+dnl
 m4_if($7, optional,[ALBERT_CHECK_PKG_OPT([$1])])
 dnl if test "$7" = "optional"; then
 dnl 	ALBERT_CHECK_PKG_OPT([$1])