1 files changed, 1 insertions, 0 deletions
diff --git a/src/gui.h b/src/gui.h
index 8b31c6c98..79c33e0b3 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -51,6 +51,7 @@ void ShowIndustryCargoesWindow();
 void ShowSubsidiesList();
 void ShowGoalsList();
 void ShowGoalQuestion(uint16 id, byte type, uint32 button_mask, const char *question);
+void ShowStoryBook();
 
 void ShowEstimatedCostOrIncome(Money cost, int x, int y);