Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -r0193009047e7d2ca711f294de99740a21142a3dd -r621e66b92670a5557e36a1929f364f39f17ba502
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 0193009047e7d2ca711f294de99740a21142a3dd)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 621e66b92670a5557e36a1929f364f39f17ba502)
@@ -70,8 +70,6 @@
 static const F32 CONCENTRATE_BOTTLE_BICARB_LOW_VOLUME_ML = ( CONCENTRATE_BOTTLE_PRIMING_VOL_ML +
                                                              ( CONCENTRATE_BOTTLE_RESERVOIOR_VOL_ML * CONCENTRATE_BOTTLE_RESERVOIOR_FILLS * BICARB_PERCENT_FILL) );
 
-#define CONCENTRATION_BOTTLE_LOW_VOLUME_ML       100.0F                                                ///< Concentration bottle low volume in mL.
-
 // ********** private data **********
 
 static DG_DRAIN_STATE_T drainState;                                                                    ///< Currently active drain state.