diff --git a/src/devices/machine/ym3802.cpp b/src/devices/machine/ym3802.cpp
index af3d1819f2f..603a9d82f53 100644
--- a/src/devices/machine/ym3802.cpp
+++ b/src/devices/machine/ym3802.cpp
@@ -260,7 +260,7 @@ WRITE8_MEMBER(ym3802_device::write)
 				{
 					if((data & 0x07) == 2)
 					{
-						const XTAL rate = (m_reg[REG_CCR] & 0x02) ? m_clkm_rate / 4 : m_clkm_rate / 8;
+						const double rate = (m_reg[REG_CCR] & 0x02) ? m_clkm_rate / 4 : m_clkm_rate / 8;
 
 						// start message to click counter
 						m_midi_counter_timer->adjust(attotime::from_hz(rate),0,attotime::from_hz(rate));