diff --git a/MANIFEST b/MANIFEST
index 186158cdbe..abe0c4bbd6 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -28,7 +28,6 @@
 ./Makefile.dist
 ./Makefile.am
 ./Makefile.in
-./m4                                    _DO_NOT_DISTRIBUTE_
 ./m4/ltsugar.m4                         _DO_NOT_DISTRIBUTE_
 ./m4/libtool.m4                         _DO_NOT_DISTRIBUTE_
 ./m4/ltversion.m4                       _DO_NOT_DISTRIBUTE_