diff --git a/jedi/evaluate_representation.py b/jedi/evaluate_representation.py
index 74ce5b46..82d2a034 100644
--- a/jedi/evaluate_representation.py
+++ b/jedi/evaluate_representation.py
@@ -288,7 +288,8 @@ class Class(use_metaclass(cache.CachedMetaClass, pr.IsScope)):
 
     def __getattr__(self, name):
         if name not in ['start_pos', 'end_pos', 'parent', 'asserts', 'docstr',
-                'get_imports', 'get_parent_until', 'get_code', 'subscopes']:
+                'doc', 'get_imports', 'get_parent_until', 'get_code',
+                'subscopes']:
             raise AttributeError("Don't touch this: %s of %s !" % (name, self))
         return getattr(self.base, name)
 
diff --git a/jedi/parsing_representation.py b/jedi/parsing_representation.py
index c3fa3aa3..3df46239 100644
--- a/jedi/parsing_representation.py
+++ b/jedi/parsing_representation.py
@@ -346,6 +346,18 @@ class Class(Scope):
             string += "pass\n"
         return string
 
+    @property
+    def doc(self):
+        """
+        Return a document string including call signature of __init__.
+        """
+        for sub in self.subscopes:
+            if sub.name.names[-1] == '__init__':
+                return '%s\n\n%s' % (
+                    sub.get_call_signature(funcname=self.name.names[-1]),
+                    self.docstr)
+        return self.docstr
+
 
 class Function(Scope):
     """
@@ -394,16 +406,18 @@ class Function(Scope):
                 debug.warning("multiple names in param %s" % n)
         return n
 
-    def get_call_signature(self, width=72):
+    def get_call_signature(self, width=72, funcname=None):
         """
         Generate call signature of this function.
 
         :param width: Fold lines if a line is longer than this value.
         :type width: int
+        :arg funcname: Override function name when given.
+        :type funcname: str
 
         :rtype: str
         """
-        l = self.name.names[-1] + '('
+        l = (funcname or self.name.names[-1]) + '('
         lines = []
         for (i, p) in enumerate(self.params):
             code = p.get_code(False)
diff --git a/test/regression.py b/test/regression.py
index 314dde67..223c5c56 100755
--- a/test/regression.py
+++ b/test/regression.py
@@ -98,6 +98,15 @@ class TestRegression(TestBase):
         doc = defs[0].doc
         assert "f(x, y = 1, z = 'a')" in doc
 
+    def test_class_call_signature(self):
+        defs = self.definition("""
+        class Foo:
+            def __init__(self, x, y=1, z='a'):
+                pass
+        Foo""")
+        doc = defs[0].doc
+        assert "Foo(self, x, y = 1, z = 'a')" in doc
+
     def test_definition_at_zero(self):
         assert self.definition("a", (1, 1)) == []
         s = self.definition("str", (1, 1))