diff --git a/README.rst b/README.rst
index 1957ea33..f55e05ff 100644
--- a/README.rst
+++ b/README.rst
@@ -55,7 +55,7 @@ Run
 Links
 -----
 
-* `Read the full documentation here <http://pydocstyle.org>`_.
+* `Read the full documentation here <http://pydocstyle.org/en/stable/>`_.
 
 * `Fork pydocstyle on GitHub <http://github.com/PyCQA/pydocstyle>`_.
 
diff --git a/docs/release_notes.rst b/docs/release_notes.rst
index 00466a57..671e4691 100644
--- a/docs/release_notes.rst
+++ b/docs/release_notes.rst
@@ -16,6 +16,8 @@ Bug Fixes
 * Update convention support documentation (#386, #393)
 * Detect inner asynchronous functions for D202 (#467)
 * Fix indentation error while parsing class methods (#441).
+* Fix a bug in parsing Google-style argument description.
+  The bug caused some argument names to go unreported in D417 (#448).
 
 
 5.0.2 - January 8th, 2020
diff --git a/src/pydocstyle/checker.py b/src/pydocstyle/checker.py
index d7739247..8e3be2c4 100644
--- a/src/pydocstyle/checker.py
+++ b/src/pydocstyle/checker.py
@@ -96,9 +96,9 @@ class ConventionChecker:
         r"(\w+)"        # Followed by 1 or more unicode chars, numbers or underscores
                         # The above is captured as the first group as this is the paramater name.
         r"\s*"          # Followed by 0 or more whitespace characters
-        r"\(?(.*?)\)?"  # Matches patterns contained within round brackets.
-                        # The `(.*?)` is the second capturing group which matches any sequence of
-                        # characters in a non-greedy way (denoted by the `*?`)
+        r"(\(.*?\))?"   # Matches patterns contained within round brackets.
+                        # The `.*?`matches any sequence of characters in a non-greedy
+                        # way (denoted by the `*?`)
         r"\s*"          # Followed by 0 or more whitespace chars
         r":"            # Followed by a colon
         ".+"            # Followed by 1 or more characters - which is the docstring for the parameter
diff --git a/src/pydocstyle/config.py b/src/pydocstyle/config.py
index e1fbc0a9..60d11f00 100644
--- a/src/pydocstyle/config.py
+++ b/src/pydocstyle/config.py
@@ -463,7 +463,7 @@ def _expand_error_codes(code_parts):
                         'known errors: %s', part)
                 expanded_codes.update(codes_to_add)
         except TypeError as e:
-            raise IllegalConfiguration(e)
+            raise IllegalConfiguration(e) from e
 
         return expanded_codes
 
diff --git a/src/tests/test_cases/sections.py b/src/tests/test_cases/sections.py
index ad37312f..2200ddfe 100644
--- a/src/tests/test_cases/sections.py
+++ b/src/tests/test_cases/sections.py
@@ -354,6 +354,36 @@ def test_missing_args_static_method(a, x, y, _test, z=3):  # noqa: D213, D407
 
         """
 
+    @staticmethod
+    @expect("D417: Missing argument descriptions in the docstring "
+            "(argument(s) a, b are missing descriptions in "
+            "'test_missing_docstring' docstring)", arg_count=2)
+    def test_missing_docstring(a, b):  # noqa: D213, D407
+        """Test a valid args section.
+
+        Args:
+            a:
+
+        """
+
+    @staticmethod
+    @expect("D417: Missing argument descriptions in the docstring "
+            "(argument(s) skip, verbose are missing descriptions in "
+            "'test_missing_docstring_another' docstring)", arg_count=2)
+    def test_missing_docstring_another(skip, verbose):  # noqa: D213, D407
+        """Do stuff.
+
+        Args:
+            skip (:attr:`.Skip`):
+                Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+                Etiam at tellus a tellus faucibus maximus. Curabitur tellus
+                mauris, semper id vehicula ac, feugiat ut tortor.
+            verbose (bool):
+                If True, print out as much infromation as possible.
+                If False, print out concise "one-liner" information.
+
+        """
+
 
 @expect(_D213)
 @expect("D417: Missing argument descriptions in the docstring "