diff --git a/Source/TonalVoice.cpp b/Source/TonalVoice.cpp
index f0471bc..723f324 100644
--- a/Source/TonalVoice.cpp
+++ b/Source/TonalVoice.cpp
@@ -102,6 +102,7 @@ double TonalVoice::getVibratoPhase()
 
     float delay = * (settingRefs->vibratoDelay);
     float rate = * (settingRefs->vibratoRate);
+    rate = 1.1 - rate;
 
     if ( sec < delay ) { return 0.0; }