diff --git a/src/mame/drivers/mpu4hw.c b/src/mame/drivers/mpu4hw.c
index c1b8040e8b9..8b7eb1e3027 100644
--- a/src/mame/drivers/mpu4hw.c
+++ b/src/mame/drivers/mpu4hw.c
@@ -277,7 +277,7 @@ static void lamp_extend_small(mpu4_state *state, int data)
 
 	lamp_ext_data = 0x1f - ((data & 0xf8) >> 3);//remove the mux lines from the data
 
-	if ((state->m_lamp_strobe_ext_persistence == 0))
+	if (state->m_lamp_strobe_ext_persistence == 0)
 	//One write to reset the drive lines, one with the data, one to clear the lines, so only the 2nd write does anything
 	//Once again, lamp persistences would take care of this, but we can't do that
 	{
diff --git a/src/mame/machine/vsnes.c b/src/mame/machine/vsnes.c
index 1fccdc7b295..8658eaf1dd5 100644
--- a/src/mame/machine/vsnes.c
+++ b/src/mame/machine/vsnes.c
@@ -657,7 +657,7 @@ static void mapper4_irq( device_t *device, int scanline, int vblank, int blanked
 	if (scanline < PPU_BOTTOM_VISIBLE_SCANLINE)
 	{
 		int priorCount = state->m_IRQ_count;
-		if ((state->m_IRQ_count == 0))
+		if (state->m_IRQ_count == 0)
 		{
 			state->m_IRQ_count = state->m_IRQ_count_latch;
 		}
diff --git a/src/mame/video/carpolo.c b/src/mame/video/carpolo.c
index a064e3f3911..8830b0c064a 100644
--- a/src/mame/video/carpolo.c
+++ b/src/mame/video/carpolo.c
@@ -427,7 +427,7 @@ static int check_sprite_left_goal_collision(running_machine &machine, int x1, in
 
 		for (x = x1; x < x1 + SPRITE_WIDTH; x++)
 			for (y = y1; y < y1 + SPRITE_HEIGHT; y++)
-				if ((state->m_sprite_goal_collision_bitmap1->pix16(y, x) == 1))
+				if (state->m_sprite_goal_collision_bitmap1->pix16(y, x) == 1)
 				{
 					pen_t pix = state->m_sprite_goal_collision_bitmap2->pix16(y, x);
 
@@ -485,7 +485,7 @@ static int check_sprite_right_goal_collision(running_machine &machine, int x1, i
 
 		for (x = x1; x < x1 + SPRITE_WIDTH; x++)
 			for (y = y1; y < y1 + SPRITE_HEIGHT; y++)
-				if ((state->m_sprite_goal_collision_bitmap1->pix16(y, x) == 1))
+				if (state->m_sprite_goal_collision_bitmap1->pix16(y, x) == 1)
 				{
 					pen_t pix = state->m_sprite_goal_collision_bitmap2->pix16(y, x);
 
@@ -525,7 +525,7 @@ static int check_sprite_border_collision(running_machine &machine, UINT8 x1, UIN
 
 	for (x = 0; x < SPRITE_WIDTH; x++)
 		for (y = 0; y < SPRITE_HEIGHT; y++)
-			if ((state->m_sprite_border_collision_bitmap->pix16(y, x) == 1))
+			if (state->m_sprite_border_collision_bitmap->pix16(y, x) == 1)
 			{
 				if (((UINT8)(x1 + x) == LEFT_BORDER) ||
 					((UINT8)(x1 + x) == RIGHT_BORDER))