diff --git a/controlnet_ext/controlnet_ext.py b/controlnet_ext/controlnet_ext.py
index 524106f..37c5a71 100644
--- a/controlnet_ext/controlnet_ext.py
+++ b/controlnet_ext/controlnet_ext.py
@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import importlib
 import re
+import sys
 from functools import lru_cache
 from pathlib import Path
 from textwrap import dedent
@@ -34,6 +35,13 @@ for extension in extensions.active():
         cn_base_path = ".".join(controlnet_path.parts[-2:])
         break
 
+if controlnet_path is not None:
+    sd_webui_controlnet_path = controlnet_path.resolve().parent
+    if sd_webui_controlnet_path.stem in ("extensions", "extensions-builtin"):
+        target_path = str(sd_webui_controlnet_path.parent)
+        if target_path not in sys.path:
+            sys.path.append(target_path)
+
 cn_model_module = {
     "inpaint": "inpaint_global_harmonious",
     "scribble": "t2ia_sketch_pidi",