diff --git a/m4/Makefile.am b/m4/Makefile.am
index 054aa9a7..dcd0ae68 100644
--- a/m4/Makefile.am
+++ b/m4/Makefile.am
@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
 EXTRA_DIST = \
   dmalloc.m4 error.m4 \
-  m4.m4 mbrtowc.m4 memcmp.m4 mkstemp.m4 \
-  prereq.m4 timevar.m4 warning.m4 \
+  m4.m4 mbrtowc.m4 memcmp.m4 \
+  prereq.m4 subpipe.m4 timevar.m4 warning.m4 \
   gettext.m4 iconv.m4 lib-ld.m4 lib-link.m4 lib-prefix.m4 progtest.m4