Index: firmware/App/Modes/ModePreGenDialysate.c
===================================================================
diff -u -rf6fb03f1e20395a61a5d5996f11f802ab8eacb2f -r67731d57db9a620418b3b848d8f75ff204902c36
--- firmware/App/Modes/ModePreGenDialysate.c	(.../ModePreGenDialysate.c)	(revision f6fb03f1e20395a61a5d5996f11f802ab8eacb2f)
+++ firmware/App/Modes/ModePreGenDialysate.c	(.../ModePreGenDialysate.c)	(revision 67731d57db9a620418b3b848d8f75ff204902c36)
@@ -269,7 +269,7 @@
 
         case DD_WET_SELF_TEST_NEGATIVE_DEAERATION_PRES_CHECK:
             //Make sure Water Inlet Valve is open
-            setValveState( M4_VALV, VALVE_STATE_OPEN );
+            setValveState( DD_M4_VALV, VALVE_STATE_OPEN );
 
             // Start timer for hyd chamber negative pressure check state
             hydChamberPressureCheckStartTimeMS = getMSTimerCount();