diff --git a/comfy/comfy_types/node_typing.py b/comfy/comfy_types/node_typing.py
index 1b71208d4..3535966fb 100644
--- a/comfy/comfy_types/node_typing.py
+++ b/comfy/comfy_types/node_typing.py
@@ -102,9 +102,13 @@ class InputTypeOptions(TypedDict):
     default: bool | str | float | int | list | tuple
     """The default value of the widget"""
     defaultInput: bool
-    """Defaults to an input slot rather than a widget"""
+    """@deprecated in v1.16 frontend. v1.16 frontend allows input socket and widget to co-exist.
+    - defaultInput on required inputs should be dropped.
+    - defaultInput on optional inputs should be replaced with forceInput.
+    Ref: https://github.com/Comfy-Org/ComfyUI_frontend/pull/3364
+    """
     forceInput: bool
-    """`defaultInput` and also don't allow converting to a widget"""
+    """Forces the input to be an input slot rather than a widget even a widget is available for the input type."""
     lazy: bool
     """Declares that this input uses lazy evaluation"""
     rawLink: bool
diff --git a/nodes.py b/nodes.py
index f63e8cb5e..8c1720c1a 100644
--- a/nodes.py
+++ b/nodes.py
@@ -2136,7 +2136,7 @@ def load_custom_node(module_path: str, ignore=set(), module_parent="custom_nodes
         module_name = sp[0]
         sys_module_name = module_name
     elif os.path.isdir(module_path):
-        sys_module_name = module_path
+        sys_module_name = module_path.replace(".", "_x_")
 
     try:
         logging.debug("Trying to load custom node {}".format(module_path))