diff --git a/src/m_menu.c b/src/m_menu.c
index 54c0b6c87..8fe782cac 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -400,7 +400,8 @@ consvar_t cv_showfocuslost = {"showfocuslost", "Yes", CV_SAVE, CV_YesNo, NULL, 0
 
 static CV_PossibleValue_t map_cons_t[] = {
 	{1,"MIN"},
-	{NUMMAPS, "MAX"}
+	{NUMMAPS, "MAX"},
+	{0,NULL}
 };
 consvar_t cv_nextmap = {"nextmap", "1", CV_HIDEN|CV_CALL, map_cons_t, Nextmap_OnChange, 0, NULL, NULL, 0, 0, NULL};