diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6eb40e5..7a0341a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.5] - 2022-12-22 :santa:
+- Fixes [#22](https://github.com/Neoteroi/essentials-openapi/issues/22)
+
 ## [1.0.4] - 2022-11-06 :snake:
 - Fixes [#18](https://github.com/Neoteroi/essentials-openapi/issues/18)
 - Workflow maintenance
diff --git a/openapidocs/__init__.py b/openapidocs/__init__.py
index c02d846..9d33622 100644
--- a/openapidocs/__init__.py
+++ b/openapidocs/__init__.py
@@ -1 +1 @@
-VERSION = "1.0.4"
+VERSION = "1.0.5"
diff --git a/openapidocs/mk/__init__.py b/openapidocs/mk/__init__.py
index e44156f..cb47769 100644
--- a/openapidocs/mk/__init__.py
+++ b/openapidocs/mk/__init__.py
@@ -26,15 +26,14 @@ def read_dict(obj, *args, default=None):
     assert isinstance(obj, dict)
 
     value = obj
-    for part in args:
-        for key in part.split():
-            if not isinstance(value, dict):
-                raise ValueError(f"Invalid sub-path: {repr(args)}")
+    for key in args:
+        if not isinstance(value, dict):
+            raise ValueError(f"Invalid sub-path: {repr(args)}")
 
-            value = value.get(key)
+        value = value.get(key)
 
-            if value is None:
-                return default
+        if value is None:
+            return default
 
     if value is None or value is obj:
         return default
diff --git a/openapidocs/mk/v3/__init__.py b/openapidocs/mk/v3/__init__.py
index f1bcc8c..d7fb513 100644
--- a/openapidocs/mk/v3/__init__.py
+++ b/openapidocs/mk/v3/__init__.py
@@ -184,7 +184,7 @@ def get_operations(self):
         return groups
 
     def get_schemas(self):
-        schemas = read_dict(self.doc, "components schemas")
+        schemas = read_dict(self.doc, "components", "schemas")
 
         if not schemas:
             return
@@ -287,7 +287,7 @@ def get_security_scheme(self, name: str) -> dict:
         """
         Gets a security scheme from the components section, by name.
         """
-        security_scheme = read_dict(self.doc, "components securitySchemes")
+        security_scheme = read_dict(self.doc, "components", "securitySchemes")
 
         if not security_scheme:  # pragma: no cover
             warnings.warn(
@@ -536,6 +536,10 @@ def expand_references(self, schema, context: Optional[ExpandContext] = None):
         if is_reference(schema):
             return self.expand_references(self.resolve_reference(schema))
 
+        if schema is None:
+            # this should not happen, but we don't want the whole build to fail
+            return None
+
         clone = copy.deepcopy(schema)
 
         for key in list(clone.keys()):
diff --git a/tests/test_mk.py b/tests/test_mk.py
index 696621e..b69ded6 100644
--- a/tests/test_mk.py
+++ b/tests/test_mk.py
@@ -19,7 +19,7 @@ def test_is_array_schema():
 
 def test_read_dict_raises_for_non_dict_property():
     with pytest.raises(ValueError):
-        read_dict({"x": 1}, "x a")
+        read_dict({"x": 1}, "x", "a")
 
 
 def test_read_dict_default():