Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rfae0f1d9a51c7a6a13d282440469663d9bfc7dec -r152aacee2eb078fb519724e1305630f5b5b4cb91
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision fae0f1d9a51c7a6a13d282440469663d9bfc7dec)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 152aacee2eb078fb519724e1305630f5b5b4cb91)
@@ -48,7 +48,7 @@
 
 #define PRE_TREATMENT_MIN_FILL_RESERVOIR_VOLUME_ML      125             ///< Fill reservoir to this volume minimum to prep volume during development.
 #define PRE_TREATMENT_FLUSH_RESERVOIR_VOLUME_ML         500             ///< Fill reservoir to this volume (in mL) to flush filter and lines.
-#define PRE_TREATMENT_FILL_RESERVOIR_ONE_VOLUME_ML      1200            ///< Fill reservoir one to this volume (in mL) during pre-treatment mode.
+#define PRE_TREATMENT_FILL_RESERVOIR_ONE_VOLUME_ML      1300            ///< Fill reservoir one to this volume (in mL) during pre-treatment mode.
 #define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      600             ///< Fill reservoir two to this volume (in mL) during pre-treatment mode.
 #define PRE_TREATMENT_FULL_RESERVOIR_VOLUME_ML          1500            ///< Fill reservoir to this volume minimum to prep volume during development.
 
@@ -1180,12 +1180,9 @@
             // Start tracking flush cycles, flushComplete => don't drain again, this completes the final fill.
             if ( FALSE == reservoirStatus[ inactiveReservoir ].flushComplete )
             {
-                if ( reservoirStatus[ inactiveReservoir ].flushCount > 0 )
+                reservoirStatus[ inactiveReservoir ].flushCount--;
+                if ( 0 == reservoirStatus[ inactiveReservoir ].flushCount )
                 {
-                    reservoirStatus[ inactiveReservoir ].flushCount -= 1;
-                }
-                else // 0 == reservoirStatus[ inactiveReservoir ].flushCount
-                {
                     reservoirStatus[ inactiveReservoir ].flushComplete = TRUE;
                 }
             }