diff --git a/src/newgrf_generic.cpp b/src/newgrf_generic.cpp
--- a/src/newgrf_generic.cpp
+++ b/src/newgrf_generic.cpp
@@ -63,8 +63,6 @@ struct GenericResolverObject : public Re
 		}
 	}
 
-	const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const override;
-
 	GrfSpecFeature GetFeature() const override
 	{
 		return (GrfSpecFeature)this->generic_scope.feature;
@@ -147,14 +145,6 @@ void AddGenericCallback(uint8 feature, c
 	return UINT_MAX;
 }
 
-
-/* virtual */ const SpriteGroup *GenericResolverObject::ResolveReal(const RealSpriteGroup *group) const
-{
-	if (group->loaded.empty()) return nullptr;
-
-	return group->loaded[0];
-}
-
 /**
  * Generic resolver.
  * @param ai_callback Callback comes from the AI.