diff --git a/aclocal.m4 b/aclocal.m4
index e05d16392..b28ddf31c 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,4 +1,4 @@
-define(AC_CHECK_DEFINE,[dnl
+AC_DEFUN([AC_CHECK_DEFINE],[dnl
   AC_CACHE_CHECK(for $1 in $2, ac_cv_define_$1,
     AC_EGREP_CPP([YES_IS_DEFINED], [
 #include <$2>