diff --git a/Robust.Shared/Replays/SharedReplayRecordingManager.cs b/Robust.Shared/Replays/SharedReplayRecordingManager.cs
index 656e9ff83b5..e54dfc4d74f 100644
--- a/Robust.Shared/Replays/SharedReplayRecordingManager.cs
+++ b/Robust.Shared/Replays/SharedReplayRecordingManager.cs
@@ -172,8 +172,8 @@ public virtual bool TryStartRecording(
         name ??= DefaultReplayFileName();
         var filePath = new ResPath(name).Clean();
 
-        if (filePath.Extension != "zip")
-            filePath = filePath.WithName(filePath.Filename + ".zip");
+        if (filePath.Extension != "rtreplay")
+            filePath = filePath.WithName(filePath.Filename + ".rtreplay");
 
         var basePath = new ResPath(NetConf.GetCVar(CVars.ReplayDirectory)).ToRootedPath();
         filePath = basePath / filePath;