Index: firmware/App/Controllers/MixingControl.c
===================================================================
diff -u -ra6ead936473ef260bbd330050fcf7e1b10120175 -r9d48b0592dc3d0bd7598bea7a470f4ac274cb86e
--- firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision a6ead936473ef260bbd330050fcf7e1b10120175)
+++ firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision 9d48b0592dc3d0bd7598bea7a470f4ac274cb86e)
@@ -323,6 +323,8 @@
      mixingControlAcidControlInterval.override              = OVERRIDE_RESET;
 
      mixingControlDataPublicationTimerCounter               = 0;
+     lastBicarbMixVolume                                    = 0;
+     lastAcidMixVolume                                      = 0;
 
      initializePIController( PI_CONTROLLER_ID_BICARB_VOL, 0.0F,\
                                 getBicarbKpGainCoefficient(), getBicarbKiGainCoefficient(),\