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-rw-r--r--src/newgrf.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 530df31b6..1733d7536 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3311,7 +3311,7 @@ static void FeatureMapSpriteGroup(byte *buf, size_t len)
* W cid cargo ID (sprite group ID) for this type of cargo
* W def-cid default cargo ID (sprite group ID) */
- if (_cur_grffile->spritegroups == 0) {
+ if (_cur_grffile->spritegroups == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: No sprite groups to work on! Skipping");
return;
}