diff --git a/jedi/api/completion.py b/jedi/api/completion.py
index e155cc1a..18cd8082 100644
--- a/jedi/api/completion.py
+++ b/jedi/api/completion.py
@@ -60,6 +60,11 @@ def filter_names(inference_state, completion_names, stack, like_name, fuzzy):
                 yield new
 
 
+def _remove_duplicates(completions, other_completions):
+    names = {d.name for d in other_completions}
+    return [c for c in completions if c.name not in names]
+
+
 def get_user_context(module_context, position):
     """
     Returns the scope in which the user resides. This includes flows.
@@ -128,14 +133,15 @@ class Completion:
 
         completion_names = self._complete_python(leaf)
 
-        completions = filter_names(self._inference_state, completion_names,
-                                   self.stack, self._like_name, fuzzy)
+        completions = list(filter_names(self._inference_state, completion_names,
+                                        self.stack, self._like_name, fuzzy))
 
         return (
-            prefixed_completions +
-            sorted(completions, key=lambda x: (x.name.startswith('__'),
-                                               x.name.startswith('_'),
-                                               x.name.lower()))
+            # Removing duplicates mostly to remove False/True/None duplicates.
+            _remove_duplicates(prefixed_completions, completions)
+            + sorted(completions, key=lambda x: (x.name.startswith('__'),
+                                                 x.name.startswith('_'),
+                                                 x.name.lower()))
         )
 
     def _complete_python(self, leaf):
@@ -211,9 +217,12 @@ class Completion:
 
         completion_names = []
         current_line = self._code_lines[self._position[0] - 1][:self._position[1]]
-        if not current_line or current_line[-1] in ' \t.;' \
-                and current_line[-3:] != '...':
-            completion_names += self._complete_keywords(allowed_transitions)
+
+        completion_names += self._complete_keywords(
+            allowed_transitions,
+            only_values=not (not current_line or current_line[-1] in ' \t.;'
+                             and current_line[-3:] != '...')
+        )
 
         if any(t in allowed_transitions for t in (PythonTokenTypes.NAME,
                                                   PythonTokenTypes.INDENT)):
@@ -293,10 +302,11 @@ class Completion:
             return complete_param_names(context, function_name.value, decorators)
         return []
 
-    def _complete_keywords(self, allowed_transitions):
+    def _complete_keywords(self, allowed_transitions, only_values):
         for k in allowed_transitions:
             if isinstance(k, str) and k.isalpha():
-                yield keywords.KeywordName(self._inference_state, k)
+                if not only_values or k in ('True', 'False', 'None'):
+                    yield keywords.KeywordName(self._inference_state, k)
 
     def _complete_global_scope(self):
         context = get_user_context(self._module_context, self._position)
diff --git a/jedi/api/strings.py b/jedi/api/strings.py
index 774dd444..a2f1ee46 100644
--- a/jedi/api/strings.py
+++ b/jedi/api/strings.py
@@ -55,12 +55,12 @@ def _completions_for_dicts(inference_state, dicts, literal_string, cut_end_quote
         dict_key_str = _create_repr_string(literal_string, dict_key)
         if dict_key_str.startswith(literal_string):
             n = dict_key_str[len(literal_string):-len(cut_end_quote) or None]
-            name = StringName(inference_state, n)
+            name = StringName(inference_state, dict_key_str[:-len(cut_end_quote) or None])
             yield Completion(
                 inference_state,
                 name,
                 stack=None,
-                like_name_length=0,
+                like_name_length=len(literal_string),
                 is_fuzzy=fuzzy
             )
 
diff --git a/test/test_api/test_completion.py b/test/test_api/test_completion.py
index 23ab7496..4d6313d2 100644
--- a/test/test_api/test_completion.py
+++ b/test/test_api/test_completion.py
@@ -305,8 +305,9 @@ _dict_keys_completion_tests = [
         ('strs["f]', 7, ['bar"', 'oo"']),
         ('strs["f"]', 7, ['bar', 'oo']),
 
-        ('mixed[', 6, [r"'a\\sdf'", '1', '1.1', 'None', "b'foo'", Ellipsis]),
+        ('mixed[', 6, [r"'a\\sdf'", '1', '1.1', "b'foo'", Ellipsis]),
         ('mixed[1', 7, ['', '.1']),
+        ('mixed[Non', 9, ['e']),
 
         ('casted["f', 9, ['3"', 'bar"', 'oo"']),
         ('casted["f"', 9, ['3', 'bar', 'oo']),
@@ -317,6 +318,7 @@ _dict_keys_completion_tests = [
         ('keywords["', None, ['a"']),
         ('keywords[Non', None, ['e']),
         ('keywords[Fa', None, ['lse']),
+        ('keywords[Tr', None, ['ue']),
         ('keywords[str', None, ['', 's']),
 ]
 
@@ -337,14 +339,11 @@ def test_dict_keys_completions(Script, added_code, column, expected, skip_pre_py
         keywords = {None: 1, False: 2, "a": 3}
         ''')
     line = None
-    if isinstance(column, tuple):
-        raise NotImplementedError
-        line, column = column
     comps = Script(code + added_code, line=line, column=column).completions()
     if Ellipsis in expected:
         # This means that global completions are part of this, so filter all of
         # that out.
-        comps = [c for c in comps if not c._name.is_value_name]
+        comps = [c for c in comps if not c._name.is_value_name and not c.is_keyword]
         expected = [e for e in expected if e is not Ellipsis]
 
     assert [c.complete for c in comps] == expected