diff --git a/Lib/ast.py b/Lib/ast.py
index 134d9d2..bfe346b 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -206,7 +206,7 @@
     """
     if not isinstance(node, (AsyncFunctionDef, FunctionDef, ClassDef, Module)):
         raise TypeError("%r can't have docstrings" % node.__class__.__name__)
-    if not node.body:
+    if not(node.body and isinstance(node.body[0], Expr)):
         return None
     node = node.body[0].value
     if isinstance(node, Str):
@@ -215,7 +215,7 @@
         text = node.value
     else:
         return None
-    if clean and text:
+    if clean:
         import inspect
         text = inspect.cleandoc(text)
     return text
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index ab32d9d..7db40e7 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -521,13 +521,44 @@
         )
 
     def test_get_docstring(self):
+        node = ast.parse('"""line one\n  line two"""')
+        self.assertEqual(ast.get_docstring(node),
+                         'line one\nline two')
+
+        node = ast.parse('class foo:\n  """line one\n  line two"""')
+        self.assertEqual(ast.get_docstring(node.body[0]),
+                         'line one\nline two')
+
         node = ast.parse('def foo():\n  """line one\n  line two"""')
         self.assertEqual(ast.get_docstring(node.body[0]),
                          'line one\nline two')
 
         node = ast.parse('async def foo():\n  """spam\n  ham"""')
         self.assertEqual(ast.get_docstring(node.body[0]), 'spam\nham')
+
+    def test_get_docstring_none(self):
         self.assertIsNone(ast.get_docstring(ast.parse('')))
+        node = ast.parse('x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node))
+        node = ast.parse('def foo():\n  pass')
+        self.assertIsNone(ast.get_docstring(node))
+
+        node = ast.parse('class foo:\n  pass')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('class foo:\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('class foo:\n  def bar(self): pass')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+        node = ast.parse('def foo():\n  pass')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('def foo():\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+        node = ast.parse('async def foo():\n  pass')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('async def foo():\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
 
     def test_literal_eval(self):
         self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])