diff --git a/Makefile.am b/Makefile.am
index 36072479..84a6eb47 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,7 +2,7 @@ ACLOCAL_AMFLAGS = -I m4
 AM_DISTCHECK_CONFIGURE_FLAGS = --without-systemdsystemunitdir
 
 EXTRA_DIST = bootstrap COPYING coding_style.md design.txt faq-compile.txt \
-  faq-general.txt file-loc.txt install.txt prog_std.txt readme.txt
+  faq-general.txt file-loc.txt install.txt m4 prog_std.txt readme.txt
 
 if XRDP_NEUTRINORDP
 NEUTRINORDPDIR = neutrinordp