Index: firmware/App/Drivers/ConductivityTeensy.c
===================================================================
diff -u -r202978f0c2f12bf5a1e466d6788e3a6fc6243569 -r7983907af837390c90979b1ac727f3f55f0b7ae2
--- firmware/App/Drivers/ConductivityTeensy.c	(.../ConductivityTeensy.c)	(revision 202978f0c2f12bf5a1e466d6788e3a6fc6243569)
+++ firmware/App/Drivers/ConductivityTeensy.c	(.../ConductivityTeensy.c)	(revision 7983907af837390c90979b1ac727f3f55f0b7ae2)
@@ -2158,7 +2158,7 @@
     TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
     OVERRIDE_TYPE_T               ovType = getOverrideArrayPayloadFromMessage( message, &payload );
 
-    if ( payload.index <= LAST_FP_COND_SENSOR )
+    if ( payload.index < NUM_OF_CONDUCTIVITY_SENSORS )
     {
         // D74 is not connected to Teensy and does not have a data structure to override.
         if ( LAST_DD_COND_SENSOR != payload.index )
@@ -2197,7 +2197,7 @@
     TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
     OVERRIDE_TYPE_T               ovType = getOverrideArrayPayloadFromMessage( message, &payload );
 
-    if ( payload.index <= LAST_FP_COND_SENSOR )
+    if ( payload.index < NUM_OF_CONDUCTIVITY_SENSORS )
     {
         // D74 is not connected to Teensy and does not have a data structure to override.
         if ( LAST_DD_COND_SENSOR != payload.index )
@@ -2237,7 +2237,7 @@
     TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
     OVERRIDE_TYPE_T               ovType = getOverrideArrayPayloadFromMessage( message, &payload );
 
-    if ( payload.index <= LAST_FP_COND_SENSOR )
+    if ( payload.index < NUM_OF_CONDUCTIVITY_SENSORS )
     {
         // D74 is not connected to Teensy and does not have a data structure to override.
         if ( LAST_DD_COND_SENSOR != payload.index )