diff --git a/src/mame/drivers/tecmosys.c b/src/mame/drivers/tecmosys.c
index 179e1256328..677ccfd7dd2 100644
--- a/src/mame/drivers/tecmosys.c
+++ b/src/mame/drivers/tecmosys.c
@@ -186,6 +186,7 @@ ae500w07.ad1 - M6295 Samples (23c4001)
 #include "sound/okim6295.h"
 #include "sound/262intf.h"
 #include "sound/ymz280b.h"
+#include "deprecat.h"
 
 UINT16* tecmosys_spriteram;
 UINT16* tilemap_paletteram16;