diff --git a/jedi/utils.py b/jedi/utils.py
index f6e78348..4632a989 100644
--- a/jedi/utils.py
+++ b/jedi/utils.py
@@ -80,5 +80,7 @@ def setup_readline(namespace_module=__main__):
     else:
         readline.set_completer(JediRL().complete)
         readline.parse_and_bind("tab: complete")
+        # jedi itself does the case matching
+        readline.parse_and_bind("set completion-ignore-case on")
         # No delimiters, Jedi handles that.
         readline.set_completer_delims('')
diff --git a/test/test_utils.py b/test/test_utils.py
index 7903ded1..2ffee08b 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -55,6 +55,10 @@ class TestSetupReadline(TestCase):
         del self.namespace.sys
         del self.namespace.os
 
+    def test_calls(self):
+        s = 'str(bytes'
+        assert self.completions(s) == [s, 'str(BytesWarning']
+
     def test_import(self):
         s = 'from os.path import a'
         assert set(self.completions(s)) == set([s + 'ltsep', s + 'bspath'])