diff --git a/comfyui_manager/__init__.py b/comfyui_manager/__init__.py
index aba770e5..e396547c 100644
--- a/comfyui_manager/__init__.py
+++ b/comfyui_manager/__init__.py
@@ -13,18 +13,21 @@ def start():
     logging.info('[START] ComfyUI-Manager')
     from .common import cm_global     # noqa: F401
 
-    should_show_legacy_manager_front = os.environ.get('ENABLE_LEGACY_COMFYUI_MANAGER_FRONT', 'false') == 'true' or ENABLE_LEGACY_COMFYUI_MANAGER_FRONT_DEFAULT
-    if not args.disable_manager and should_show_legacy_manager_front:
-        try:
-            from .legacy import manager_server  # noqa: F401
-            from .legacy import share_3rdparty  # noqa: F401
-            import nodes
-            nodes.EXTENSION_WEB_DIRS['comfyui-manager-legacy'] = os.path.join(os.path.dirname(__file__), 'js')
-        except Exception as e:
-            print("Error enabling legacy ComfyUI Manager frontend:", e)
-    else:
-        from .glob import manager_server  # noqa: F401
-        from .glob import share_3rdparty  # noqa: F401
+    if not args.disable_manager:
+        should_show_legacy_manager_front = args.enable_manager_legacy_ui or ENABLE_LEGACY_COMFYUI_MANAGER_FRONT_DEFAULT
+        if should_show_legacy_manager_front:
+            try:
+                from .legacy import manager_server  # noqa: F401
+                from .legacy import share_3rdparty  # noqa: F401
+                import nodes
+
+                logging.info("[ComfyUI-Manager] Legacy UI is enabled.")
+                nodes.EXTENSION_WEB_DIRS['comfyui-manager-legacy'] = os.path.join(os.path.dirname(__file__), 'js')
+            except Exception as e:
+                print("Error enabling legacy ComfyUI Manager frontend:", e)
+        else:
+            from .glob import manager_server  # noqa: F401
+            from .glob import share_3rdparty  # noqa: F401
 
 
 def should_be_disabled(fullpath:str) -> bool: