diff --git a/plugins/Synchro/SynchroSynth.cpp b/plugins/Synchro/SynchroSynth.cpp
index 595271c4ad8..27cb614121c 100644
--- a/plugins/Synchro/SynchroSynth.cpp
+++ b/plugins/Synchro/SynchroSynth.cpp
@@ -282,12 +282,14 @@ void SynchroSynth::generalChanged()
 		int octaveDiff = m_carrierDetune.value() - m_modulatorDetune.value();
 		float pitchDifference = powf(2, octaveDiff);
 		float phase = (float)i / (float)SYNCHRO_GRAPH_SAMPLES * F_2PI;
+		while (phase >= F_2PI) { phase -= F_2PI; }
 		float phaseMod = SynchroWaveform(phase, m_modulatorDrive.value(),
 			m_modulatorSync.value(), m_modulatorChop.value(),
 			m_harmonics.value()) * m_modulationStrength.value()
 			* m_modulation.value() * SYNCHRO_PM_CONST;
-		m_resultGraph.setSampleAt(i, SynchroWaveform(phase + phaseMod *
-			pitchDifference, m_carrierDrive.value(), m_carrierSync.value(),
+		phase = phase + phaseMod * pitchDifference;
+		while (phase >= F_2PI) { phase -= F_2PI; }
+		m_resultGraph.setSampleAt(i, SynchroWaveform(phase, m_carrierDrive.value(), m_carrierSync.value(),
 			m_carrierChop.value(), 0));
 	}
 }