diff --git a/Acid/Acid.ino b/Acid/Acid.ino
index a2a3d28..8e6c27e 100644
--- a/Acid/Acid.ino
+++ b/Acid/Acid.ino
@@ -276,7 +276,7 @@ void updateControl(){
 
   //Set pitch and play notes on trigger
   if (MIDINoteFaded) {
-    noteFreq = mtof((float) kMapNote(CVInVal << 2) / pitchSubSteps);
+    noteFreq = Q16n16_mtof((float) kMapNote(CVInVal << 2) / pitchSubSteps);
     digitalWrite(LED, !gateInVal);
     if (gateInVal && !gateIsHigh) {
       gateIsHigh = true;