Index: firmware/App/HDCommon.h
===================================================================
diff -u -r9b831d8407ad2ac737a58f369455074306d5097a -r8cebc7f282f403c99f712d422454c15414b6fc73
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 9b831d8407ad2ac737a58f369455074306d5097a)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 8cebc7f282f403c99f712d422454c15414b6fc73)
@@ -47,7 +47,6 @@
 //    #define DISABLE_CRC_ERROR               1           // Do not error on bad CRC for CAN messages
     #define DISABLE_ACK_ERRORS              1           // Do not error on failure of other node(s) to ACK a message
     #define USE_FMD_FLOW_SENSOR             1           // Use FMD flow sensor (on HD) instead of FMD on DG
-//    #define USE_FMB_FLOW_SENSOR             1           // Use FMB flow sensor instead of flow estimation from pump speed/pressure/wearing
 //    #define RUN_BP_OPEN_LOOP                1           // Run blood pump in open loop mode
 //    #define RUN_DPI_OPEN_LOOP               1           // Run dialysate inlet pump in open loop mode
     #define WORN_OUT_CARTRIDGE              1           // Running with an old worn out cartridge (max wear)