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-rw-r--r--src/ai/api/ai_group.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ai/api/ai_group.cpp b/src/ai/api/ai_group.cpp
index c9d3795cb..0aad40cf5 100644
--- a/src/ai/api/ai_group.cpp
+++ b/src/ai/api/ai_group.cpp
@@ -114,7 +114,7 @@
/* static */ bool AIGroup::SetAutoReplace(GroupID group_id, EngineID engine_id_old, EngineID engine_id_new)
{
EnforcePrecondition(false, IsValidGroup(group_id) || group_id == GROUP_ALL);
- EnforcePrecondition(false, AIEngine::IsValidEngine(engine_id_new));
+ EnforcePrecondition(false, AIEngine::IsBuildable(engine_id_new));
return AIObject::DoCommand(0, group_id << 16, (engine_id_new << 16) | engine_id_old, CMD_SET_AUTOREPLACE);
}