diff --git a/src/mame/drivers/vsnes.cpp b/src/mame/drivers/vsnes.cpp
index 29cd73d3d4a..b4091fab8c7 100644
--- a/src/mame/drivers/vsnes.cpp
+++ b/src/mame/drivers/vsnes.cpp
@@ -794,7 +794,7 @@ INPUT_PORTS_END
 static INPUT_PORTS_START( vsbball )
 	PORT_INCLUDE( vsnes_dual )
 
-	PORT_START("DSW1")  /* bit 0 and 1 read from bit 3 and 4 on $4016, rest of the bits read on $4017 */
+	PORT_START("DSW0")  /* bit 0 and 1 read from bit 3 and 4 on $4016, rest of the bits read on $4017 */
 	PORT_DIPNAME( 0x03, 0x02, "Player Defense Strength" )   PORT_DIPLOCATION("SW1:!1,!2")
 	PORT_DIPSETTING(    0x00, "Weak" )
 	PORT_DIPSETTING(    0x02, DEF_STR( Normal ) )
@@ -816,7 +816,7 @@ static INPUT_PORTS_START( vsbball )
 	PORT_DIPSETTING(    0x40, DEF_STR( Medium ) )
 	PORT_DIPSETTING(    0xc0, "Strong" )
 
-	PORT_START("DSW0")  /* bit 0 and 1 read from bit 3 and 4 on $4016, rest of the bits read on $4017 */
+	PORT_START("DSW1")  /* bit 0 and 1 read from bit 3 and 4 on $4016, rest of the bits read on $4017 */
 	PORT_SERVICE( 0x01, IP_ACTIVE_HIGH )            PORT_DIPLOCATION("SW2:!1")
 	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Coinage ) )      PORT_DIPLOCATION("SW2:!2,!3")
 	PORT_DIPSETTING(    0x02, DEF_STR( 2C_1C ) )