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-rw-r--r--graph_gui.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/graph_gui.c b/graph_gui.c
index 527830b60..f9849f5d9 100644
--- a/graph_gui.c
+++ b/graph_gui.c
@@ -1,6 +1,7 @@
#include "stdafx.h"
#include "openttd.h"
#include "table/strings.h"
+#include "functions.h"
#include "window.h"
#include "gui.h"
#include "gfx.h"