diff --git a/src/emu/bus/cpc/playcity.c b/src/emu/bus/cpc/playcity.c
index b32259590bc..945a1fbf183 100644
--- a/src/emu/bus/cpc/playcity.c
+++ b/src/emu/bus/cpc/playcity.c
@@ -151,6 +151,6 @@ void cpc_playcity_device::update_ymz_clock()
 	clk = clk / 2;  // YMZ294 has an internal /2 divider (not handled in AY core?)
 	m_ymz1->ay_set_clock(clk);
 	m_ymz2->ay_set_clock(clk);
-	popmessage("YMZ clocks set to %" I64FMT "iHz",clk);
+	popmessage("YMZ clocks set to %" I64FMT "Hz",clk);
 }