diff --git a/src/devices/bus/sunkbd/sparckbd.cpp b/src/devices/bus/sunkbd/sparckbd.cpp
index 85837e3b34c..d6bfedcf806 100644
--- a/src/devices/bus/sunkbd/sparckbd.cpp
+++ b/src/devices/bus/sunkbd/sparckbd.cpp
@@ -266,11 +266,11 @@ INPUT_PORTS_START( sparc_keyboard )
 	PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("L Shift")      PORT_CODE(KEYCODE_LSHIFT)     PORT_CHAR(UCHAR_MAMEKEY(LSHIFT))
 	PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_Z)          PORT_CHAR('z') PORT_CHAR('Z')
 	PORT_BIT( 0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('x') PORT_CHAR('X')
-	PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('c') PORT_CHAR('C')
-	PORT_BIT( 0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('v') PORT_CHAR('V')
-	PORT_BIT( 0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('b') PORT_CHAR('B')
-	PORT_BIT( 0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('n') PORT_CHAR('N')
-	PORT_BIT( 0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_X)          PORT_CHAR('m') PORT_CHAR('M')
+	PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_C)          PORT_CHAR('c') PORT_CHAR('C')
+	PORT_BIT( 0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_V)          PORT_CHAR('v') PORT_CHAR('V')
+	PORT_BIT( 0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_B)          PORT_CHAR('b') PORT_CHAR('B')
+	PORT_BIT( 0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_N)          PORT_CHAR('n') PORT_CHAR('N')
+	PORT_BIT( 0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_M)          PORT_CHAR('m') PORT_CHAR('M')
 	PORT_BIT( 0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_COMMA)      PORT_CHAR(',') PORT_CHAR('<')
 	PORT_BIT( 0x1000, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_STOP)       PORT_CHAR('.') PORT_CHAR('>')
 	PORT_BIT( 0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD )                           PORT_CODE(KEYCODE_SLASH)      PORT_CHAR('/') PORT_CHAR('?')