diff --git a/src/emu/sound/disc_wav.c b/src/emu/sound/disc_wav.c
index ce07cc87b98..c3d46dad81e 100644
--- a/src/emu/sound/disc_wav.c
+++ b/src/emu/sound/disc_wav.c
@@ -131,7 +131,7 @@ DISCRETE_STEP(dss_counter)
 		else
 		{
 			count -= inc;
-			while (count < m_min)
+			while (count < m_min || count > (0xffffffff - inc))
 			{
 				count += m_diff;
 			}