diff -Naur a/progsreiserfs.m4 b/progsreiserfs.m4
--- a/progsreiserfs.m4	2012-10-10 02:27:00.620967261 +0200
+++ b/progsreiserfs.m4	2012-10-10 02:27:14.490894176 +0200
@@ -10,7 +10,7 @@
 dnl Adds the required libraries to $REISERFS_LIBS and does an
 dnl AC_SUBST(REISERFS_LIBS)
 
-AC_DEFUN(AC_CHECK_LIBREISERFS,
+AC_DEFUN([AC_CHECK_LIBREISERFS],
 [
 
 dnl save LIBS