Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -ra9315539f527b92523b1598ff91e47db4d71dae2 -re0cdf49eb0f54239e5d765282e0952cea7ded1bd
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision a9315539f527b92523b1598ff91e47db4d71dae2)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision e0cdf49eb0f54239e5d765282e0952cea7ded1bd)
@@ -43,7 +43,7 @@
 #define DRAIN_EMPTY_TARE_WAIT           ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )             /// Time period to wait after drain complete and before taring load cells.
 
 #define TARGET_RO_PRESSURE_PSI          130                                                   ///< Target pressure for RO pump.
-#define TARGET_RO_FLOW_RATE_L           0.3                                                   ///< Target flow rate for RO pump.
+#define TARGET_RO_FLOW_RATE_L           0.3F                                                  ///< Target flow rate for RO pump.
 
 #define DELAY_RES_DRAIN_VALVE_MS        1000                                                  ///< Delay reservoir drain valve open by 1 second.
 #define DELAY_DRAIN_PUMP_MS             2000                                                  ///< Delay drain pump on by 2 seconds.
@@ -52,7 +52,7 @@
 
 #define RINSE_CONCENTRATE_LINES_WAIT    ( 25 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )        ///< Time period to wait for concentrate lines to rinse.
 
-#define RINSE_SPEED                     ( ( CONCENTRATE_PUMP_MAX_SPEED - 3.0 ) * -1.0 )       ///< Reserver the concentrate speed to rinse out concentrate lines.
+#define RINSE_SPEED                     ( ( CONCENTRATE_PUMP_MAX_SPEED - 3.0F ) * -1.0F )     ///< Reserver the concentrate speed to rinse out concentrate lines.
 
 // ********** private data **********