diff --git a/Makefile.am b/Makefile.am
index 458ede508..2ddc96d3d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -31,7 +31,7 @@ EXTRA_DIST = \
 	tools/logger.pl \
 	tools/rlink_make_speed_table \
 	tools/st7_dtc_as \
-	contrib/
+	contrib
 
 libtool: $(LIBTOOL_DEPS)
 	$(SHELL) ./config.status --recheck