diff --git a/Assets/Mirror/Examples/_Common/Scripts/PerlinNoise.cs b/Assets/Mirror/Examples/_Common/Scripts/PerlinNoise.cs
index 4b55f21a3..3c7063243 100644
--- a/Assets/Mirror/Examples/_Common/Scripts/PerlinNoise.cs
+++ b/Assets/Mirror/Examples/_Common/Scripts/PerlinNoise.cs
@@ -21,8 +21,9 @@ void GenerateTerrain()
                 Debug.LogError("No Terrain component found on this GameObject.");
                 return;
             }
-
+#if UNITY_EDITOR
             Undo.RecordObject(terrain, "Generate Perlin Noise Terrain");
+#endif
             terrain.terrainData = GenerateTerrainData(terrain.terrainData);
         }