diff --git a/duckduckgo_search/duckduckgo_search.py b/duckduckgo_search/duckduckgo_search.py
index f2f11a9..4bdb778 100644
--- a/duckduckgo_search/duckduckgo_search.py
+++ b/duckduckgo_search/duckduckgo_search.py
@@ -40,12 +40,12 @@ def __exit__(
         self._close_session()
 
     def __del__(self) -> None:
-        if self._asession._closed is False:
-            self._close_session()
+        self._close_session()
 
     def _close_session(self) -> None:
         """Close the curl-cffi async session."""
-        self._run_async_in_thread(self._asession.close())
+        if hasattr(self, "_asession") and self._asession._closed is False:
+            self._run_async_in_thread(self._asession.close())
 
     def _run_async_in_thread(self, coro: Awaitable[Any]) -> Any:
         """Runs an async coroutine in a separate thread."""
diff --git a/duckduckgo_search/duckduckgo_search_async.py b/duckduckgo_search/duckduckgo_search_async.py
index 0ea8fcc..92f1288 100644
--- a/duckduckgo_search/duckduckgo_search_async.py
+++ b/duckduckgo_search/duckduckgo_search_async.py
@@ -77,10 +77,10 @@ async def __aexit__(
         exc_val: Optional[BaseException] = None,
         exc_tb: Optional[TracebackType] = None,
     ) -> None:
-        await self._asession.close()
+        await self._asession.__aexit__(exc_type, exc_val, exc_tb)
 
     def __del__(self) -> None:
-        if self._asession._closed is False:
+        if hasattr(self, "_asession") and self._asession._closed is False:
             with suppress(RuntimeError, RuntimeWarning):
                 asyncio.create_task(self._asession.close())