1 files changed, 1 insertions, 0 deletions
diff --git a/src/openttd.cpp b/src/openttd.cpp
index c07ca1db8..1f2d7c3b5 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -97,6 +97,7 @@ void MusicLoop();
 void ResetMusic();
 void ResetOldNames();
 void ProcessAsyncSaveFinish();
+void CallWindowTickEvent();
 
 extern void SetDifficultyLevel(int mode, GameOptions *gm_opt);
 extern Player* DoStartupNewPlayer(bool is_ai);