diff --git a/lib/stdlib/src/edlin_expand.erl b/lib/stdlib/src/edlin_expand.erl
index 8ed43cd5ef20..444483a1b743 100644
--- a/lib/stdlib/src/edlin_expand.erl
+++ b/lib/stdlib/src/edlin_expand.erl
@@ -480,7 +480,12 @@ expand_function_parameter_type(Mod, MFA, FunType, Args, Unfinished, Nestings, FT
                                  end,
     case match_arguments(TypeTree, Args) of
         false -> {no, [], []};
-        true when Parameters == [] -> {yes, ")", [#{title=>MFA, elems=>[")"], options=>[]}]};
+        true when Parameters == [] ->
+            if Nestings == [] ->
+                    {yes, ")", [#{title=>MFA, elems=>[{")",[]}], options=>[]}]};
+               true ->
+                    {no, [], []}
+            end;
         true ->
             Parameter = lists:nth(length(Args)+1, Parameters),
             {T, _Name} = case Parameter of
diff --git a/lib/stdlib/src/edlin_type_suggestion.erl b/lib/stdlib/src/edlin_type_suggestion.erl
index 055091b005e4..1dcbb53b0a5b 100644
--- a/lib/stdlib/src/edlin_type_suggestion.erl
+++ b/lib/stdlib/src/edlin_type_suggestion.erl
@@ -295,7 +295,9 @@ get_arity1({map, Types}, _Constraints, [{'map', _Keys, [], _, _}]) ->
 get_arity1({map, Types}, _Constraints, [{'map', _Keys, _Key, _, _}]) ->
     length(Types);
 get_arity1({map, Types}, Constraints, [{'map', Keys, [], _, _}|Nestings]) ->
-    lists:flatten([get_arity1(T, Constraints, Nestings) || {_, Key, _}=T <- Types, not lists:member(atom_to_list(Key), Keys)]);
+    lists:flatten([get_arity1(T, Constraints, Nestings) ||
+                      {_, Key, _}=T <- Types,
+                      not lists:member(catch atom_to_list(Key), Keys)]);
 get_arity1({map, Types}, Constraints, [{'map', _Keys, Key, _, _}|Nestings]) ->
     case [V || {_, K, V} <- Types, K =:= list_to_atom(Key)] of
         [] -> none;
@@ -334,7 +336,9 @@ get_atoms1({tuple, LT}, Constraints, [{'tuple', Args, _}|Nestings]) when length(
         false -> []
     end;
 get_atoms1({map, Types}, Constraints, [{'map', Keys, [], _, _}|Nestings]) ->
-    lists:flatten([get_atoms1(T, Constraints, Nestings) || {_, Key, _}=T <- Types, not lists:member(atom_to_list(Key), Keys)]);
+    lists:flatten([get_atoms1(T, Constraints, Nestings) ||
+                      {_, Key, _}=T <- Types,
+                      not lists:member(catch atom_to_list(Key), Keys)]);
 get_atoms1({map, Types}, Constraints, [{'map', _Keys, Key, _, _}|Nestings]) ->
     case [V || {_, K, V} <- Types, K =:= list_to_atom(Key)] of
         [] -> [];
@@ -379,7 +383,8 @@ get_types1({tuple, LT}, Cs, [{tuple, Args, _}|Nestings], MaxUserTypeExpansions,
         false -> []
     end;
 get_types1({'map', Types}, Cs, [{'map', Keys, [], _Args, _}|Nestings], MaxUserTypeExpansions, Options) ->
-    lists:flatten([get_types1(T, Cs, Nestings, MaxUserTypeExpansions, Options) || {_, Key, _}=T <- Types, not lists:member(atom_to_list(Key), Keys)]);
+    lists:flatten([get_types1(T, Cs, Nestings, MaxUserTypeExpansions, Options) ||
+                      {_, Key, _}=T <- Types, not lists:member(catch atom_to_list(Key), Keys)]);
 get_types1({'map', Types}, Cs, [{'map', _, Key, _Args, _}|Nestings], MaxUserTypeExpansions, Options) ->
     case [V || {_, K, V} <- Types, K =:= list_to_atom(Key)] of
         [] -> [];
diff --git a/lib/stdlib/test/edlin_expand_SUITE.erl b/lib/stdlib/test/edlin_expand_SUITE.erl
index 4b8f659a3c00..15abaaa7f07e 100644
--- a/lib/stdlib/test/edlin_expand_SUITE.erl
+++ b/lib/stdlib/test/edlin_expand_SUITE.erl
@@ -259,6 +259,10 @@ function_parameter_completion(Config) ->
     {no, [], [#{elems:=[#{elems:=[#{elems:=[{"any()",[]},{"[any() | [Deeplist]]",[]}]}]}]}]} = do_expand("complete_function_parameter:a_deeplist_fun("),
     {no,[],[#{title:="typespecs",
                 elems:=[#{title:=
+                                "complete_function_parameter:multi_arity_fun()",
+                            options:=[],
+                            elems:=[{")",[]}]},
+                        #{title:=
                                "complete_function_parameter:multi_arity_fun(T1)",
                           elems:=[#{title:="types",
                                     elems:=[{"integer()",[]}],
@@ -269,13 +273,10 @@ function_parameter_completion(Config) ->
                             elems:=[#{title:="types",
                                     elems:=[{"integer()",[]}],
                                     options:=[{hide,title}]}],
-                            options:=[{highlight_param,1}]},
-                            #{title:=
-                                "complete_function_parameter:multi_arity_fun()",
-                            options:=[],
-                            elems:=[")"]}],
+                            options:=[{highlight_param,1}]}],
                 options:=[highlight_all]}]} = do_expand("complete_function_parameter:multi_arity_fun("),
     {no, [], [#{elems:=[#{elems:=[#{elems:=[{"true",[]},{"false",[]}]}]}]}]} = do_expand("complete_function_parameter:multi_arity_fun(1,"),
+    {no, [], []} = do_expand("complete_function_parameter:multi_arity_fun(["),
     {no,[],
         [#{elems :=
             [#{elems :=
@@ -362,6 +363,10 @@ get_coverage(Config) ->
     do_expand("complete_function_parameter:map_parameter_function(#{}, "),
     do_expand("complete_function_parameter:map_parameter_function(#{V=>1}, "),
     do_expand("complete_function_parameter:map_parameter_function(#{a=>V}, "),
+    do_expand("complete_function_parameter:map_variable_parameter_function(#{"),
+    do_expand("complete_function_parameter:map_variable_parameter_function(#{a"),
+    do_expand("complete_function_parameter:map_variable_parameter_function(#{a => "),
+    do_expand("complete_function_parameter:map_variable_parameter_function(#{a => a"),
     do_expand("complete_function_parameter:tuple_parameter_function({a,b}, "),
     do_expand("complete_function_parameter:tuple_parameter_function({a,V}, "),
     do_expand("complete_function_parameter:list_parameter_function([], "),
diff --git a/lib/stdlib/test/edlin_expand_SUITE_data/complete_function_parameter.erl b/lib/stdlib/test/edlin_expand_SUITE_data/complete_function_parameter.erl
index 3e7ea2f6a76e..8fbe7b27b73b 100644
--- a/lib/stdlib/test/edlin_expand_SUITE_data/complete_function_parameter.erl
+++ b/lib/stdlib/test/edlin_expand_SUITE_data/complete_function_parameter.erl
@@ -34,6 +34,7 @@
     'emoji_function🤯'/1,
     map_parameter_function/1,
     map_parameter_function/2,
+     map_variable_parameter_function/2,
     tuple_parameter_function/2,
     list_parameter_function/2,
     non_empty_list_parameter_function/2,
@@ -108,11 +109,15 @@ test_year(_Y) -> 0.
 'emoji_function🤯'(_) -> 0.
 
 -spec map_parameter_function(Map) -> boolean() when
-    Map :: #{a => 1, b => 2, c => 3, d => error}.
+    Map :: #{ integer() := a, a => 1, b => 2, c => 3, d => error}.
 map_parameter_function(_) -> false.
 -spec map_parameter_function(Map, any()) -> boolean() when
     Map :: #{a => 1, b => 2, c => 3, d => error}.
 map_parameter_function(_,_) -> false.
+-spec map_variable_parameter_function(Key, Map) -> Value when
+    Map :: #{ Key => Value, _ => _}.
+map_variable_parameter_function(_, _) ->
+     false.
 
 -spec binary_parameter_function(binary(), any()) -> boolean().
 binary_parameter_function(_,_) -> false.