Index: firmware/App/Modes/ModeTreatment.c
===================================================================
diff -u -r6e8917e48113a8798b26e489296a3f69509c0590 -r12ae81f766052993995d323456fa4c746cf4ee75
--- firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 6e8917e48113a8798b26e489296a3f69509c0590)
+++ firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 12ae81f766052993995d323456fa4c746cf4ee75)
@@ -700,7 +700,8 @@
     if ( ++treatmentParamsRangesBroadcastTimerCtr >= TREATMENT_SETTINGS_RANGES_PUB_INTERVAL )
     {
         // compute minimum treatment duration
-        U32 minTime = CALC_ELAPSED_TREAT_TIME_IN_MIN() + 2;  // add two minutes to cover rounding and ensure it's valid for next minute
+        U32 elapseTime = CALC_ELAPSED_TREAT_TIME_IN_MIN() + 2;        // add two minutes to cover rounding and ensure it's valid for next minute
+        U32 minTime = MAX( elapseTime, MIN_TREATMENT_TIME_MINUTES );  // treatment duration cannot be < 1 hour
         // compute maximum treatment duration (from both UF and dialysate volume perspectives)
         U32 maxTimeRem = ( MAX_UF_VOLUME_ML - (U32)getUltrafiltrationVolumeCollected() ) / ( presUFRate > 0.0 ? (U32)presUFRate : 1 );
         U32 maxTime1 = minTime + maxTimeRem;