diff --git a/external/gpl2/xcvs/dist/src/mkmodules.c b/external/gpl2/xcvs/dist/src/mkmodules.c
index e3f7a62736b1..27587415b168 100644
--- a/external/gpl2/xcvs/dist/src/mkmodules.c
+++ b/external/gpl2/xcvs/dist/src/mkmodules.c
@@ -99,6 +99,7 @@ static const char *const access_contents[] = {
 };
 
 static const char *const group_contents[] = {
+	NULL
 };
 
 /* Structure which describes an administrative file.  */