diff --git a/src/emu/video/resnet.h b/src/emu/video/resnet.h
index a88a21ca8a3..f81d37a5ad1 100644
--- a/src/emu/video/resnet.h
+++ b/src/emu/video/resnet.h
@@ -87,6 +87,7 @@
 
 /* Some aliases */
 
+#define RES_NET_VIN_MB7051			RES_NET_VIN_TTL_OUT
 #define RES_NET_VIN_MB7052			RES_NET_VIN_TTL_OUT
 #define RES_NET_VIN_MB7053			RES_NET_VIN_TTL_OUT
 #define RES_NET_VIN_28S42			RES_NET_VIN_TTL_OUT