diff --git a/browser/IDriver.py b/browser/IDriver.py
index 996441b..a89c681 100644
--- a/browser/IDriver.py
+++ b/browser/IDriver.py
@@ -9,6 +9,9 @@ class IDriver():
     browser: "WebDriver"
 
     def __del__(self):
+        self.terminate()
+
+    def terminate(self):
         self.browser.quit()
 
     def new_tab(self) -> str:
diff --git a/browser/manager.py b/browser/manager.py
index e436261..aa1942e 100644
--- a/browser/manager.py
+++ b/browser/manager.py
@@ -73,7 +73,7 @@ class BrowserManager():
 
     def terminate(self):
         if self._driver:
-            del self._driver
+            self._driver.terminate()
 
 
 class TabInfo(object):