diff --git a/src/api/server_proxy.py b/src/api/server_proxy.py
index 44d8d46..168e480 100644
--- a/src/api/server_proxy.py
+++ b/src/api/server_proxy.py
@@ -291,19 +291,20 @@ class RenderServerProxy:
         """
         return self.request_data(f'engines/{engine_name}?response_type={response_type}', timeout)
 
-    def delete_engine(self, engine_name:str, version:str, system_cpu=None):
+    def delete_engine(self, engine_name:str, version:str, system_os=None, cpu=None):
         """
         Sends a request to the server to delete a specific engine.
 
         Args:
             engine_name (str): The name of the engine to delete.
             version (str): The version of the engine to delete.
-            system_cpu (str, optional): The system CPU type. Defaults to None.
+            system_os (str, optional): The system OS. Defaults to None.
+            cpu (str, optional): The system CPU type. Defaults to None.
 
         Returns:
             Response: The response from the server.
         """
-        form_data = {'engine': engine_name, 'version': version, 'system_cpu': system_cpu}
+        form_data = {'engine': engine_name, 'version': version, 'system_os': system_os, 'cpu': cpu}
         return requests.post(f'http://{self.hostname}:{self.port}/api/delete_engine', json=form_data)
 
     # --------------------------------------------
diff --git a/src/ui/engine_browser.py b/src/ui/engine_browser.py
index fa815c4..bf60f78 100644
--- a/src/ui/engine_browser.py
+++ b/src/ui/engine_browser.py
@@ -158,7 +158,9 @@ class EngineBrowserWindow(QMainWindow):
         if reply is not QMessageBox.StandardButton.Yes:
             return
 
-        result = RenderServerProxy(self.hostname).delete_engine(engine_info['engine'], engine_info['version'])
+        result = RenderServerProxy(self.hostname).delete_engine(
+            engine_info['engine'], engine_info['version'], engine_info.get('system_os'), engine_info.get('cpu'),
+        )
         if result.ok:
             self.update_table()
         else: