Index: binaries/data/mods/public/maps/scripts/CaptureTheRelic.js
===================================================================
--- binaries/data/mods/public/maps/scripts/CaptureTheRelic.js
+++ binaries/data/mods/public/maps/scripts/CaptureTheRelic.js
@@ -50,7 +50,7 @@
 /**
  * Check if an individual player or team has acquired all relics.
  * Also check if the countdown needs to be stopped if a player/team no longer has all relics.
- * Reset the countdown if any of the original allies tries to change their diplomacy with one of these allies.
+ * Reset the countdown if the group of the original allies changes.
  */
 Trigger.prototype.CheckCaptureTheRelicCountdown = function(data)
 {
@@ -58,20 +58,35 @@
 
 	for (let playerID = 1; playerID < TriggerHelper.GetNumberOfPlayers(); ++playerID)
 	{
+		if (!this.playerRelicsCount[playerID])
+			continue;
+
+		let relicOwners = [];
 		let playerAndAllies = cmpEndGameManager.GetAlliedVictory() ?
 			QueryPlayerIDInterface(playerID).GetMutualAllies() : [playerID];
 
 		let teamRelicsOwned = 0;
 
 		for (let ally of playerAndAllies)
+		{
 			teamRelicsOwned += this.playerRelicsCount[ally];
+			if (this.playerRelicsCount[ally])
+				relicOwners.push(ally);
+		}
 
 		if (teamRelicsOwned == this.relics.length)
 		{
-			if (!data ||
-			    !this.relicsVictoryCountdownPlayers.length ||
-			    this.relicsVictoryCountdownPlayers.indexOf(data.player) != -1 &&
-			    this.relicsVictoryCountdownPlayers.indexOf(data.otherPlayer) != -1)
+			// Filter all players mutually allied to all relicOwners
+			for (let owner of relicOwners)
+				playerAndAllies.filter(ally => QueryPlayerIDInterface(owner).GetMutualAllies().indexOf(ally) != -1)
+
+			// All relicOwners should be mutally allied
+			if (relicOwners.some(owner => playerAndAllies.indexOf(owner) == -1))
+				this.DeleteCaptureTheRelicVictoryMessages();
+
+			// When playerAndAllies isn't the same as this.relicsVictoryCountdownPlayers then reset the timer
+			else if (playerAndAllies.some(ally => this.relicsVictoryCountdownPlayers.indexOf(ally) == -1) ||
+			         this.relicsVictoryCountdownPlayers.some(ally => playerAndAllies.indexOf(ally) == -1))
 			{
 				this.relicsVictoryCountdownPlayers = playerAndAllies;
 				this.StartCaptureTheRelicCountdown(playerAndAllies);