Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r9f0aa5aeba7cd2cb3e823a78957f3c96e7c97a6e -r79a5884a9d7d6123dab6504940ec92f72093665c
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 9f0aa5aeba7cd2cb3e823a78957f3c96e7c97a6e)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 79a5884a9d7d6123dab6504940ec92f72093665c)
@@ -1248,6 +1248,8 @@
 static void checkBloodFlowSensorSignalStrength( void )
 {
 #ifndef DISABLE_PUMP_FLOW_CHECKS
+    HD_OP_MODE_T opMode = getCurrentOperationMode();
+
     // check flow sensor signal strength when appropriate   TODO - in pre-treatment, must be far enough along for fluid to be in tubing
     if ( MODE_TREA == opMode || ( MODE_PRET == opMode && FALSE ) )
     {