diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94b4c5f..a75a2e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@
 - Changed
   - Command line message about loading config file is now hidden with config
     option `--quiet`
+- Fixed
+  - Fixed a bug where assigning a value to an attribute caused pydoclint to
+    crash
 
 ## [0.5.9] - 2024-09-29
 
diff --git a/pydoclint/utils/arg.py b/pydoclint/utils/arg.py
index c74b2c9..a021e07 100644
--- a/pydoclint/utils/arg.py
+++ b/pydoclint/utils/arg.py
@@ -92,7 +92,7 @@ def fromAstArg(cls, astArg: ast.arg) -> 'Arg':
     def fromAstAnnAssign(cls, astAnnAssign: ast.AnnAssign) -> 'Arg':
         """Construct an Arg object from a Python ast.AnnAssign object"""
         return Arg(
-            name=astAnnAssign.target.id,
+            name=unparseAnnotation(astAnnAssign.target),
             typeHint=unparseAnnotation(astAnnAssign.annotation),
         )
 
@@ -220,6 +220,10 @@ def fromAstAssign(cls, astAssign: ast.Assign) -> 'ArgList':
                     infoList.append(Arg(name=item.id, typeHint=''))
             elif isinstance(target, ast.Name):  # such as `a = 1` or `a = b = 2`
                 infoList.append(Arg(name=target.id, typeHint=''))
+            elif isinstance(target, ast.Attribute):  # e.g., uvw.xyz = 1
+                infoList.append(
+                    Arg(name=unparseAnnotation(target), typeHint='')
+                )
             else:
                 raise InternalError(
                     f'astAssign.targets[{i}] is of type {type(target)}'
diff --git a/tests/data/edge_cases/16_assign_to_attr/cases.py b/tests/data/edge_cases/16_assign_to_attr/cases.py
new file mode 100644
index 0000000..5737de3
--- /dev/null
+++ b/tests/data/edge_cases/16_assign_to_attr/cases.py
@@ -0,0 +1,12 @@
+# From https://github.com/jsh9/pydoclint/issues/180
+
+
+class MyClass:
+    def large_drawing(self, obj):
+        return self.drawing(obj, size=500, center=False)
+
+    large_drawing.descr_1: str = 'Drawing'
+
+    # Non-self attribute should not be type hinted, because this could lead to
+    # potential ambiguities. See more: https://stackoverflow.com/a/77831273
+    large_drawing.descr_2: str = 'Drawing'
diff --git a/tests/test_main.py b/tests/test_main.py
index 0a68f60..d319a48 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1459,6 +1459,9 @@ def testNonAscii() -> None:
         ('15_very_long_annotations/sphinx.py', {'style': 'sphinx'}, []),
         ('15_very_long_annotations/google.py', {'style': 'google'}, []),
         ('15_very_long_annotations/numpy.py', {'style': 'numpy'}, []),
+        ('16_assign_to_attr/cases.py', {'style': 'sphinx'}, []),
+        ('16_assign_to_attr/cases.py', {'style': 'google'}, []),
+        ('16_assign_to_attr/cases.py', {'style': 'numpy'}, []),
     ],
 )
 def testEdgeCases(