diff --git a/src/mame/drivers/phc25.cpp b/src/mame/drivers/phc25.cpp
index 2c9011c54ea..a134bc83e21 100644
--- a/src/mame/drivers/phc25.cpp
+++ b/src/mame/drivers/phc25.cpp
@@ -408,5 +408,5 @@ ROM_END
 /* Driver */
 
 //    YEAR  NAME    PARENT  COMPAT  MACHINE  INPUT   CLASS        INIT        COMPANY  FULLNAME           FLAGS
-COMP( 1983, phc25,  0,      0,      pal,     phc25,  phc25_state, empty_init, "Sanyo", "PHC-25 (Europe)", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )
-COMP( 1983, phc25j, phc25,  0,      ntsc,    phc25j, phc25_state, empty_init, "Sanyo", "PHC-25 (Japan)",  MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )
+COMP( 1983, phc25,  0,      0,      pal,     phc25,  phc25_state, empty_init, "Sanyo", "PHC-25 (Europe)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
+COMP( 1983, phc25j, phc25,  0,      ntsc,    phc25j, phc25_state, empty_init, "Sanyo", "PHC-25 (Japan)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )