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-rw-r--r--src/newgrf_engine.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/newgrf_engine.cpp b/src/newgrf_engine.cpp
index a6438eca4..313086f57 100644
--- a/src/newgrf_engine.cpp
+++ b/src/newgrf_engine.cpp
@@ -886,7 +886,10 @@ SpriteID GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction dire
SpriteID GetRotorOverrideSprite(EngineID engine, const Vehicle *v, bool info_view)
{
+ #if !defined(NDEBUG) || defined(WITH_ASSERT)
const Engine *e = GetEngine(engine);
+ #endif /* !defined(NDEBUG) || defined(WITH_ASSERT) */
+
const SpriteGroup *group;
ResolverObject object;