diff --git a/src/mame/video/avgdvg.c b/src/mame/video/avgdvg.c
index 1b5d6b3b37b..4363db0e66c 100644
--- a/src/mame/video/avgdvg.c
+++ b/src/mame/video/avgdvg.c
@@ -670,6 +670,7 @@ int avg_tempest_device::handler_7() // tempest_strobe3
 	return cycles;
 }
 
+#if 0
 void avg_tempest_device::vggo() // tempest_vggo
 {
 	m_pc = 0;
@@ -682,7 +683,7 @@ void avg_tempest_device::vggo() // tempest_vggo
 	 */
 	nvect = 0;
 }
-
+#endif
 
 	/*************************************
 	*
@@ -912,7 +913,6 @@ void avg_quantum_device::vggo() // tempest_vggo
 	nvect = 0;
 }
 
-
 int avg_quantum_device::handler_0() // quantum_st2st3
 {
 	/* Quantum doesn't decode latch0 or latch2 but ST2 and ST3 are fed
diff --git a/src/mame/video/avgdvg.h b/src/mame/video/avgdvg.h
index 79f923e7f46..269e7ebc49f 100644
--- a/src/mame/video/avgdvg.h
+++ b/src/mame/video/avgdvg.h
@@ -189,7 +189,7 @@ public:
 
 	virtual int handler_6();
 	virtual int handler_7();
-	virtual void vggo();
+	//virtual void vggo();
 };
 
 // device type definition