diff --git a/src/emucore/tia/frame-manager/JitterEmulation.cxx b/src/emucore/tia/frame-manager/JitterEmulation.cxx
index db6c48372..3026863ff 100644
--- a/src/emucore/tia/frame-manager/JitterEmulation.cxx
+++ b/src/emucore/tia/frame-manager/JitterEmulation.cxx
@@ -65,7 +65,7 @@ void JitterEmulation::updateJitter(Int32 scanlineDifference)
 {
   if (uInt32(abs(scanlineDifference)) < Metrics::minDeltaForJitter) return;
 
-  Int32 jitter = std::min<Int32>(jitter, Metrics::maxJitter);
+  Int32 jitter = std::min<Int32>(scanlineDifference, Metrics::maxJitter);
   jitter = std::max<Int32>(jitter, -myYStart);
 
   if (jitter > 0) jitter += myJitterFactor;