diff --git a/src/devices/cpu/upd7810/upd7810.cpp b/src/devices/cpu/upd7810/upd7810.cpp
index 467817c6086..4e845d4e6e1 100644
--- a/src/devices/cpu/upd7810/upd7810.cpp
+++ b/src/devices/cpu/upd7810/upd7810.cpp
@@ -1456,9 +1456,9 @@ void upd7810_device::handle_timers(int cycles)
 		/* reset A/D converter */
 		m_adcnt = 0;
 		if (ANM & 0x10)
-			m_adtot = 144/3;
+			m_adtot = 144;
 		else
-			m_adtot = 192/3;
+			m_adtot = 192;
 		m_adout = 0;
 		m_shdone = 0;
 		if (ANM & 0x01)