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-rw-r--r--src/map/map.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/map/map.c b/src/map/map.c
index 106224a47..bb367a08d 100644
--- a/src/map/map.c
+++ b/src/map/map.c
@@ -4502,6 +4502,8 @@ void map_zone_change2(int m, struct map_zone_data *zone)
{
const char *empty = "";
+ if (zone == NULL)
+ return;
Assert_retv(m >= 0 && m < map->count);
if( map->list[m].zone == zone )
return;