diff --git a/src/emu/machine/pit8253.c b/src/emu/machine/pit8253.c
index e2013805bd1..606c9ff718b 100644
--- a/src/emu/machine/pit8253.c
+++ b/src/emu/machine/pit8253.c
@@ -60,6 +60,7 @@ pit8253_device::pit8253_device(const machine_config &mconfig, const char *tag, d
 	{
 		m_timers[i].gate = 1;
 		m_timers[i].phase = 0;
+		m_timers[i].clock = 0;
 	}
 }
 
@@ -76,6 +77,7 @@ pit8253_device::pit8253_device(const machine_config &mconfig, device_type type,
 	{
 		m_timers[i].gate = 1;
 		m_timers[i].phase = 0;
+		m_timers[i].clock = 0;
 	}
 }