Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r02fa169f02dd5a8caf27d1ea4441c74ba38317e8 -r46617afb446c35270b59e21085b270433d13d113
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 02fa169f02dd5a8caf27d1ea4441c74ba38317e8)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 46617afb446c35270b59e21085b270433d13d113)
@@ -401,7 +401,11 @@
 {
     F32 artPres = getLongFilteredArterialPressure();
     F32 rotSpd  = filteredBloodPumpSpeed / BP_GEAR_RATIO;
+#ifndef WORN_OUT_CARTRIDGE
     U32 rotCnt  = CAP( bloodPumpRotorCounter, BP_MAX_ROTOR_COUNT_FOR_WEAR );
+#else
+    U32 rotCnt = BP_MAX_ROTOR_COUNT_FOR_WEAR;
+#endif
     F32 wear    = BP_FLOW_WEAR_A_TERM * (F32)rotCnt + BP_FLOW_WEAR_B_TERM;
     F32 alpha   = wear * artPres + BP_FLOW_ALPHA_Y_INTERCEPT;
     F32 flow    = alpha * BP_ML_PER_ROTOR_REV * rotSpd;