diff --git a/modules/api/api.py b/modules/api/api.py
index 9d73083fb..606db179d 100644
--- a/modules/api/api.py
+++ b/modules/api/api.py
@@ -724,9 +724,9 @@ class Api:
             cuda = {'error': f'{err}'}
         return models.MemoryResponse(ram=ram, cuda=cuda)
 
-    def launch(self, server_name, port):
+    def launch(self, server_name, port, root_path):
         self.app.include_router(self.router)
-        uvicorn.run(self.app, host=server_name, port=port, timeout_keep_alive=shared.cmd_opts.timeout_keep_alive)
+        uvicorn.run(self.app, host=server_name, port=port, timeout_keep_alive=shared.cmd_opts.timeout_keep_alive, root_path=root_path)
 
     def kill_webui(self):
         restart.stop_program()
diff --git a/webui.py b/webui.py
index 2314735fd..6bf06854f 100644
--- a/webui.py
+++ b/webui.py
@@ -374,7 +374,7 @@ def api_only():
     api.launch(
         server_name="0.0.0.0" if cmd_opts.listen else "127.0.0.1",
         port=cmd_opts.port if cmd_opts.port else 7861,
-        root_path = f"/{cmd_opts.subpath}"
+        root_path=f"/{cmd_opts.subpath}" if cmd_opts.subpath else ""
     )