diff --git a/src/mame/video/baraduke.c b/src/mame/video/baraduke.c
index 5ae8aaeab46..885cf79a350 100644
--- a/src/mame/video/baraduke.c
+++ b/src/mame/video/baraduke.c
@@ -342,8 +342,8 @@ SCREEN_UPDATE_IND16( baraduke )
 
 SCREEN_VBLANK( baraduke )
 {
-	// rising edge
-	if (vblank_on)
+	// falling edge
+	if (!vblank_on)
 	{
 		baraduke_state *state = screen.machine().driver_data<baraduke_state>();
 		if (state->m_copy_sprites)
diff --git a/src/mame/video/macrossp.c b/src/mame/video/macrossp.c
index b40eb0bdac0..7398a252e08 100644
--- a/src/mame/video/macrossp.c
+++ b/src/mame/video/macrossp.c
@@ -431,8 +431,8 @@ state->m_scrc_videoregs[2]);// 08 - 0b
 
 SCREEN_VBLANK( macrossp )
 {
-	// rising edge
-	if (vblank_on)
+	// falling edge
+	if (!vblank_on)
 	{
 		macrossp_state *state = screen.machine().driver_data<macrossp_state>();
 
diff --git a/src/mame/video/namcos86.c b/src/mame/video/namcos86.c
index 69a4f2aab21..a78bddea15c 100644
--- a/src/mame/video/namcos86.c
+++ b/src/mame/video/namcos86.c
@@ -398,8 +398,8 @@ SCREEN_UPDATE_IND16( namcos86 )
 
 SCREEN_VBLANK( namcos86 )
 {
-	// rising edge
-	if (vblank_on)
+	// falling edge
+	if (!vblank_on)
 	{
 		namcos86_state *state = screen.machine().driver_data<namcos86_state>();
 		if (state->m_copy_sprites)
diff --git a/src/mame/video/pgm.c b/src/mame/video/pgm.c
index 475f9c6f968..c72cc847daf 100644
--- a/src/mame/video/pgm.c
+++ b/src/mame/video/pgm.c
@@ -675,8 +675,8 @@ SCREEN_UPDATE_IND16( pgm )
 
 SCREEN_VBLANK( pgm )
 {
-	// rising edge
-	if (vblank_on)
+	// falling edge
+	if (!vblank_on)
 	{
 		pgm_state *state = screen.machine().driver_data<pgm_state>();