diff --git a/Runtime/Scripts/MonoSingleton.cs b/Runtime/Scripts/MonoSingleton.cs
index d4bdd7b..376d0bd 100644
--- a/Runtime/Scripts/MonoSingleton.cs
+++ b/Runtime/Scripts/MonoSingleton.cs
@@ -143,7 +143,7 @@ public static void DestroyInstance()
             }
 
             instance.ClearSingleton();
-            instance = default(T);
+            instance = null;
         }
 
         #endregion
diff --git a/Runtime/Scripts/Singleton.cs b/Runtime/Scripts/Singleton.cs
index 4766c1e..ce4ab85 100644
--- a/Runtime/Scripts/Singleton.cs
+++ b/Runtime/Scripts/Singleton.cs
@@ -107,7 +107,7 @@ public static void DestroyInstance()
             }
 
             instance.ClearSingleton();
-            instance = default(T);
+            instance = null;
         }
 
         #endregion