1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui.h b/src/gui.h
index 68ae76d0c..823423575 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -63,7 +63,7 @@ enum WarningLevel {
 	WL_CRITICAL, ///< Critical errors, the MessageBox is shown in all cases
 };
 
-void ShowErrorMessage(StringID summary_msg, StringID detailed_msg, WarningLevel wl, int x = 0, int y = 0);
+void ShowErrorMessage(StringID summary_msg, StringID detailed_msg, WarningLevel wl, int x = 0, int y = 0, uint textref_stack_size = 0, const uint32 *textref_stack = NULL);
 
 void ShowExtraViewPortWindow(TileIndex tile = INVALID_TILE);
 void ShowExtraViewPortWindowForTileUnderCursor();