diff --git a/CHANGELOG-PRERELEASE.md b/CHANGELOG-PRERELEASE.md
index 717a02bd..f9aaa964 100644
--- a/CHANGELOG-PRERELEASE.md
+++ b/CHANGELOG-PRERELEASE.md
@@ -20,6 +20,7 @@ The format is based on [Keep a Changelog].
 - Errors with models with UV at very edge `#1363`
 - Errors if exactly same AnimatorController is specified for multiple playable layers `#1366`
 - Errors if objects removed by some component is listed on exclusions of Trace and Optimize `#1367`
+- OverflowException when creating prefab `#1369`
 
 ### Security
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0e5a29b..100334d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ The format is based on [Keep a Changelog].
 - Errors with models with UV at very edge `#1363`
 - Errors if exactly same AnimatorController is specified for multiple playable layers `#1366`
 - Errors if objects removed by some component is listed on exclusions of Trace and Optimize `#1367`
+- OverflowException when creating prefab `#1369`
 
 ### Security
 
diff --git a/Internal/PrefabSafeSet/Editor/UniqueCollection/PrefabSafeUniqueCollectionRuntimeEditorImpl.cs b/Internal/PrefabSafeSet/Editor/UniqueCollection/PrefabSafeUniqueCollectionRuntimeEditorImpl.cs
index e9c6d6ca..033c04c5 100644
--- a/Internal/PrefabSafeSet/Editor/UniqueCollection/PrefabSafeUniqueCollectionRuntimeEditorImpl.cs
+++ b/Internal/PrefabSafeSet/Editor/UniqueCollection/PrefabSafeUniqueCollectionRuntimeEditorImpl.cs
@@ -58,7 +58,7 @@ public static void OnValidate<TComponent>(TComponent component,
             PrefabSafeUniqueCollection.NestCount = nestCount;
 
             var shouldUsePrefabOnSceneLayer =
-                PSUCRuntimeUtil.ShouldUsePrefabOnSceneLayer(component);
+                nestCount != 0 && PSUCRuntimeUtil.ShouldUsePrefabOnSceneLayer(component);
             var maxLayerCount = shouldUsePrefabOnSceneLayer ? nestCount - 1 : nestCount;
 
             // https://github.com/anatawa12/AvatarOptimizer/issues/52