diff --git a/src/variables.h b/src/variables.h
index 63e229a09a..4a9c8cecda 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -10,6 +10,8 @@
 # define MAX_PATH 260
 #endif
 
+#include "gfx.h"
+
 // Prices and also the fractional part.
 VARDEF Prices _price;
 VARDEF uint16 _price_frac[NUM_PRICES];