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Diffstat (limited to 'src/mame/drivers/uapce.cpp')
-rw-r--r--src/mame/drivers/uapce.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/uapce.cpp b/src/mame/drivers/uapce.cpp
index 9016b99689c..f8fb440524a 100644
--- a/src/mame/drivers/uapce.cpp
+++ b/src/mame/drivers/uapce.cpp
@@ -163,7 +163,7 @@ void uapce_state::jamma_if_control_latch_w(uint8_t data)
/* D7 : Controls relay which connects the PCE R-AUDIO output to the common audio path.
(1= Relay closed, 0= Relay open) */
- machine().sound().system_enable( (data >> 7) & 1 );
+ machine().sound().system_mute(!BIT(data, 7));
/* D6 : Output to JAMMA connector KEY pin. Connected to /RESET on the PCE backplane connector.
(1= /RESET not asserted, 0= /RESET asserted) */