diff --git a/Makefile.am b/Makefile.am
index 4a66e40..9e89c93 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@
 MAINTAINERCLEANFILES = Makefile.in Makefile aclocal.m4 config.* \
                    configure compile depcomp install-sh \
                    ltconfig ltmain.sh missing mkinstalldirs \
-                   stamp-h.in
+                   stamp-h.in m4/l*m4
 
 SUBDIRS = src data