diff --git a/src/mame/drivers/missile.c b/src/mame/drivers/missile.c
index cc404c3e836..d616901f976 100644
--- a/src/mame/drivers/missile.c
+++ b/src/mame/drivers/missile.c
@@ -1173,6 +1173,22 @@ ROM_START( mcombata )
 	ROM_LOAD( "mmi6331.6f",   0x0000, 0x0020, CRC(86a22140) SHA1(2beebf7855e29849ada1823eae031fc98220bc43) )
 ROM_END
 
+ROM_START( mcombats ) /* bootleg (Sidam) @ $ */
+	ROM_REGION( 0x8000, "maincpu", 0 )
+	ROM_LOAD( "002-0-0.10a",  0x5000, 0x0800, CRC(589b81de) SHA1(06f18a837cedb0da5464dfaa04f92bd035db3752) ) // 002-0.0a
+	ROM_LOAD( "002-1-1.9a",   0x5800, 0x0800, CRC(08796a78) SHA1(e5aabe775889752ad1581098fcbf52ff1fa03b3b) ) // 002-1.1a
+	ROM_LOAD( "002-2-2.8a",   0x6000, 0x0800, CRC(59ab750c) SHA1(4555c27ddeb22ba895610a9c516fe574664a6f4b) ) // 002-2.2a
+	ROM_LOAD( "002-3.3a",     0x6800, 0x0800, CRC(3ad69b83) SHA1(847fa697fc8e9c890ebf3794fb14fedad81aee19) )
+	ROM_LOAD( "002-4.4a",     0x7000, 0x0800, CRC(aac71e95) SHA1(7daf115eb2cdde69b7c4de1e1a6ee68cd2fd0f2c) )
+	ROM_LOAD( "002-5-5.5a",   0x7800, 0x0800, CRC(1b9a16e2) SHA1(03fb292bb6f815724b2fc4b2f561398000367373) ) // 002-5.5a
+
+	ROM_REGION( 0x0020, "proms", 0 )
+	ROM_LOAD( "mmi6331.6f",   0x0000, 0x0020, CRC(86a22140) SHA1(2beebf7855e29849ada1823eae031fc98220bc43) )
+ROM_END
+
+
+
+
 /*************************************
  *
  *  Driver initialization
@@ -1269,3 +1285,4 @@ GAME( 1981, suprmatkd,missile, missile, suprmatk,        0, ROT0, "Atari / Genco
 /* the bootlegs are on different hardware and don't work */
 GAME( 198?, mcombat,  missile, missile, missile,         0, ROT0, "bootleg (Videotron)", "Missile Combat (Videotron bootleg, set 1)", GAME_NOT_WORKING )
 GAME( 198?, mcombata, missile, missile, missile,         0, ROT0, "bootleg (Videotron)", "Missile Combat (Videotron bootleg, set 2)", GAME_NOT_WORKING )
+GAME( 198?, mcombats, missile, missile, missile,         0, ROT0, "bootleg (Sidam)", "Missile Combat (Sidam bootleg)", GAME_NOT_WORKING )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 8bf73ced204..d745370b220 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -6169,6 +6169,7 @@ suprmatk		//                  (c) 1980 + (c) 1981 Gencomp
 suprmatkd		//                  (c) 1980 + (c) 1981 Gencomp
 mcombat
 mcombata
+mcombats
 
 // Atari vector games
 llander			// 0345xx           no copyright notice