diff --git a/src/engine.tsx b/src/engine.tsx
index 3bc0fe9f6..6366f05da 100644
--- a/src/engine.tsx
+++ b/src/engine.tsx
@@ -63,15 +63,6 @@ declare global {
   };
 }
 
-// Only show warning if the time diff is greater than this value.
-const thresholdOfTimeDiffForShowingWarningAboutSystemClock = CONSTANTS.MillisecondsPerFiveMinutes;
-
-function showWarningAboutSystemClock(timeDiff: number) {
-  AlertEvents.emit(
-    `Warning: The system clock moved backward: ${convertTimeMsToTimeElapsedString(Math.abs(timeDiff))}.`,
-  );
-}
-
 export const GameCycleEvents = new EventEmitter<[]>();
 
 /** Game engine. Handles the main game loop. */
@@ -274,12 +265,6 @@ const Engine: {
       const lastUpdate = Player.lastUpdate;
       let timeOffline = Engine._lastUpdate - lastUpdate;
       if (timeOffline < 0) {
-        if (Math.abs(timeOffline) > thresholdOfTimeDiffForShowingWarningAboutSystemClock) {
-          const timeDiff = timeOffline;
-          setTimeout(() => {
-            showWarningAboutSystemClock(timeDiff);
-          }, 250);
-        }
         timeOffline = 0;
       }
       const numCyclesOffline = Math.floor(timeOffline / CONSTANTS.MilliPerCycle);
@@ -430,9 +415,6 @@ const Engine: {
     const _thisUpdate = new Date().getTime();
     let diff = _thisUpdate - Engine._lastUpdate;
     if (diff < 0) {
-      if (Math.abs(diff) > thresholdOfTimeDiffForShowingWarningAboutSystemClock) {
-        showWarningAboutSystemClock(diff);
-      }
       diff = 0;
       Engine._lastUpdate = _thisUpdate;
       Player.lastUpdate = _thisUpdate;