diff --git a/include/assimp/MemoryIOWrapper.h b/include/assimp/MemoryIOWrapper.h
index 87b28ac91..15434dab7 100644
--- a/include/assimp/MemoryIOWrapper.h
+++ b/include/assimp/MemoryIOWrapper.h
@@ -159,7 +159,7 @@ public:
     /** Destructor. */
     ~MemoryIOSystem() {
         for (auto &it : created_streams) {
-            MemoryIOSystem::Close(it);
+            delete it;
         }
     }