diff --git a/lib/prefs.cpp b/lib/prefs.cpp
index 6a781e18e19..1b61bb40acd 100644
--- a/lib/prefs.cpp
+++ b/lib/prefs.cpp
@@ -1,6 +1,6 @@
 // This file is part of BOINC.
 // http://boinc.berkeley.edu
-// Copyright (C) 2008 University of California
+// Copyright (C) 2022 University of California
 //
 // BOINC is free software; you can redistribute it and/or modify it
 // under the terms of the GNU Lesser General Public License
@@ -32,8 +32,9 @@
 #include "error_numbers.h"
 #include "str_replace.h"
 #include "parse.h"
+#include "str_util.h"
 #include "util.h"
-
+#include "..\client\client_msgs.h"
 #include "prefs.h"
 
 void GLOBAL_PREFS_MASK::set_all() {
@@ -408,6 +409,14 @@ int GLOBAL_PREFS::parse_override(
             if (!mask.niu_suspend_cpu_usage) {
                 niu_suspend_cpu_usage = suspend_cpu_usage;
             }
+            // Checks for a condition where no computing could occur if suspend until idle and
+            // suspend after being idle overlap.
+            //
+            if (mask.idle_time_to_run && mask.suspend_if_no_recent_input) {
+                if ((idle_time_to_run - suspend_if_no_recent_input + 0.005) >= 0) {
+                    msg_printf(NULL, MSG_USER_ALERT, "%s", "Test message.");
+                }
+            }
             return 0;
         }
         if (in_venue) {
@@ -765,7 +774,7 @@ void GLOBAL_PREFS::write_day_prefs(MIOFILE& f) {
         bool net_present = net_times.week.days[i].present;
         //write only when needed
         if (net_present || cpu_present) {
-            
+
             f.printf("   <day_prefs>\n");                
             f.printf("      <day_of_week>%d</day_of_week>\n", i);
             if (cpu_present) {