diff --git a/funcs_common.py b/funcs_common.py
index cca9b4f..6c5ec7c 100644
--- a/funcs_common.py
+++ b/funcs_common.py
@@ -7,7 +7,7 @@ import typing as _t
 
 import re as _re
 
-from frozendict import deepfreeze as _deepfreeze
+from frozendict import deepfreeze as _deepfreeze, frozendict as _frozendict
 
 from server import PromptServer as _PromptServer
 
@@ -71,7 +71,9 @@ def _verify_input_dict(input_dict: _t.Dict[str, _T] = None, error_if_none=False)
 			raise TypeError("No input-dict")
 		return
 
-	if not isinstance(input_dict, dict):
+	# In py3.10, frozendict isn't a dict, but is a `typing.Mapping`.
+	# So, this many types to check against:
+	if not isinstance(input_dict, (dict, _frozendict, _t.Mapping)):
 		raise TypeError(f"Input-dict isn't a dict. Got: {input_dict!r}")
 
 	errors_dict: _t.Dict[_t.Any, str] = dict()
diff --git a/node_dict_preview.py b/node_dict_preview.py
index e599de3..beacc28 100644
--- a/node_dict_preview.py
+++ b/node_dict_preview.py
@@ -7,7 +7,7 @@ import typing as _t
 from inspect import cleandoc as _cleandoc
 from pprint import pformat as _pformat
 
-from frozendict import deepfreeze as _deepfreeze
+from frozendict import deepfreeze as _deepfreeze, frozendict as _frozendict
 
 from . import _meta
 from .docstring_formatter import format_docstring as _format_docstring
@@ -24,7 +24,13 @@ def _to_regular_dict_recursive_copy(input_dict: dict = None) -> dict:
 	if not input_dict:
 		return dict()
 	return {
-		k: (_to_regular_dict_recursive_copy(v) if isinstance(v, dict) else v)
+		k: (
+			_to_regular_dict_recursive_copy(v)
+			# In py3.10, frozendict isn't a dict, but is a `typing.Mapping`.
+			# So, this many types to check against:
+			if isinstance(v, (dict, _frozendict, _t.Mapping))
+			else v
+		)
 		for k, v in input_dict.items()
 	}