diff --git a/Makefile.am b/Makefile.am
index 94b1564b..ab302637 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,8 +6,9 @@ CLEANFILES = tmux.1.mdoc tmux.1.man cmd-parse.c
 
 # Distribution tarball options.
 EXTRA_DIST = \
-	CHANGES README README.ja COPYING example_tmux.conf compat/*.[ch] \
+	CHANGES README README.ja COPYING example_tmux.conf \
 	osdep-*.c mdoc2man.awk tmux.1
+dist_EXTRA_tmux_SOURCES = compat/*.[ch]
 
 # Preprocessor flags.
 AM_CPPFLAGS += @XOPEN_DEFINES@ -DTMUX_CONF="\"$(sysconfdir)/tmux.conf\""