diff --git a/src/main/kotlin/io/github/deficuet/unitykt/UnityAssetManager.kt b/src/main/kotlin/io/github/deficuet/unitykt/UnityAssetManager.kt
index b460bcbb..f09cb9ae 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/UnityAssetManager.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/UnityAssetManager.kt
@@ -159,6 +159,7 @@ class UnityAssetManager: Closeable {
 
         fun closeAll() {
             managers.forEach { it.close() }
+            managers.clear()
         }
     }
 }
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