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-rw-r--r--src/autoreplace_gui.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/autoreplace_gui.cpp b/src/autoreplace_gui.cpp
index ba8f3b57b..0a1b4686c 100644
--- a/src/autoreplace_gui.cpp
+++ b/src/autoreplace_gui.cpp
@@ -49,7 +49,7 @@ static int CDECL EngineNumberSorter(const EngineID *a, const EngineID *b)
*/
void InvalidateAutoreplaceWindow(EngineID e, GroupID id_g)
{
- if (GetGroupNumEngines(_local_company, id_g, e) || GetGroupNumEngines(_local_company, ALL_GROUP, e) == 0) {
+ if (GetGroupNumEngines(_local_company, id_g, e) == 0 || GetGroupNumEngines(_local_company, ALL_GROUP, e) == 0) {
/* We don't have any of this engine type.
* Either we just sold the last one, we build a new one or we stopped replacing it.
* In all cases, we need to update the left list */