Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -r29e57b5232f605a871c62580e16a7db297aae992 -r0d8381c50f7189c4cfbc2794a4aedf297eea7d15
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 29e57b5232f605a871c62580e16a7db297aae992)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 0d8381c50f7189c4cfbc2794a4aedf297eea7d15)
@@ -752,9 +752,9 @@
     {
         U16 dopMotorHallSensorCount = getFPGADialOutPumpHallSensorCount();
         U32 nextIdx = INC_WRAP( dopMotorSpeedCalcIdx, 0, DOP_SPEED_CALC_BUFFER__LEN - 1 );
-        U16 incDelta = ( dopMotorHallSensorCount >= dopLastMotorHallSensorCounts[ dopMotorSpeedCalcIdx ] ? \
-                         dopMotorHallSensorCount - dopLastMotorHallSensorCounts[ dopMotorSpeedCalcIdx ] : \
-                         ( HEX_64_K - dopLastMotorHallSensorCounts[ dopMotorSpeedCalcIdx ] ) + dopMotorHallSensorCount );
+        U16 incDelta = ( dopMotorHallSensorCount >= dopLastMotorHallSensorCounts[ nextIdx ] ? \
+                         dopMotorHallSensorCount - dopLastMotorHallSensorCounts[ nextIdx ] : \
+                         ( HEX_64_K - dopLastMotorHallSensorCounts[ nextIdx ] ) + dopMotorHallSensorCount );
         U16 decDelta = HEX_64_K - incDelta;
         U16 delta;