Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rd384eb875bc3cb4b41f12249a024072f0f0f29e1 -r23575c7474e340c5b67bc3c48eaa3e774d5d9acc
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision d384eb875bc3cb4b41f12249a024072f0f0f29e1)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 23575c7474e340c5b67bc3c48eaa3e774d5d9acc)
@@ -460,7 +460,7 @@
 {
     F32 artPres = getFilteredArterialPressure();
 
-#ifndef DISABLE_PRESSURE_CHECKS
+#ifndef DISABLE_ARTERIAL_PRESSURE_CHECK
     // Check arterial pressure is in range
     if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_ARTERIAL_PRESSURE_OUT_OF_RANGE,
                                              ( artPres > ARTERIAL_PRESSURE_MAX_MMHG || artPres < ARTERIAL_PRESSURE_MIN_MMHG ) ) )
@@ -505,15 +505,15 @@
 {
     F32 venPres = getFilteredVenousPressure();
 
-#ifndef DISABLE_PRESSURE_CHECKS
-    // Check arterial pressure is in range
+#ifndef DISABLE_VENOUS_PRESSURE_CHECK
+    // Check venous pressure is in range
     if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_PRESSURE_OUT_OF_RANGE, venPres > VENOUS_PRESSURE_MAX_MMHG ) ||
          TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_PRESSURE_OUT_OF_RANGE, venPres < VENOUS_PRESSURE_MIN_MMHG ) )
     {
         SET_ALARM_WITH_1_F32_DATA( ALARM_ID_HD_VENOUS_PRESSURE_OUT_OF_RANGE, venPres );
     }
 
-    // Check arterial pressure during treatment mode
+    // Check venous pressure during treatment mode
     if ( ( MODE_TREA == getCurrentOperationMode() ) && ( getTreatmentState() <= TREATMENT_DIALYSIS_STATE ) )
     {
         F32 venLowLimit  = (F32)getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRESSURE_LOW_LIMIT );