diff --git a/jedi/api/classes.py b/jedi/api/classes.py
index 47cc7a07..8e100a39 100644
--- a/jedi/api/classes.py
+++ b/jedi/api/classes.py
@@ -638,9 +638,18 @@ class CallSignature(Definition):
         """
         return self._bracket_start_pos
 
+    @property
+    def _params_str(self):
+        return ', '.join([p.description[6:]
+                          for p in self.params])
+
     def __repr__(self):
-        return '<%s: %s index %s>' % \
-            (type(self).__name__, self._name.string_name, self.index)
+        return '<%s: %s index=%r params=[%s]>' % (
+            type(self).__name__,
+            self._name.string_name,
+            self._index,
+            self._params_str,
+        )
 
 
 class _Help(object):