diff --git a/lib/tools/src/lcnt.erl b/lib/tools/src/lcnt.erl
index 3f443d0c5788..840e7621ecde 100644
--- a/lib/tools/src/lcnt.erl
+++ b/lib/tools/src/lcnt.erl
@@ -959,7 +959,7 @@ summate_stats([S|Ss], #stats{ tries = Tries, colls = Colls, time = Time, nt = Nt
 summate_histogram(Tup,undefined) when is_tuple(Tup) -> Tup;
 summate_histogram(undefined,Tup) when is_tuple(Tup) -> Tup;
 summate_histogram(Hs1,Hs2) ->
-    list_to_tuple([ A + B || {A,B} <- lists:zip(tuple_to_list(Hs1),tuple_to_list(Hs2))]).
+    list_to_tuple([A + B || A <- tuple_to_list(Hs1) && B <- tuple_to_list(Hs2)]).
 
 %% manipulators
 filter_locks_type(Locks, undefined) -> Locks;
diff --git a/lib/tools/src/tprof.erl b/lib/tools/src/tprof.erl
index 134e9c6596c7..23e161358778 100644
--- a/lib/tools/src/tprof.erl
+++ b/lib/tools/src/tprof.erl
@@ -1123,12 +1123,14 @@ format_impl(Device, {Type, Total, Inspected}) ->
     format_each(Device, Type, Total, Inspected).
 
 format_each(Device, call_count, _Total, Inspected) ->
-    {Widths, Lines} = lists:foldl(
-        fun ({Mod, {F, A}, Calls, _Value, _VPC, Percent}, {Widths, Ln}) ->
-            Line = [lists:flatten(io_lib:format("~tw:~tw/~w", [Mod, F, A])),
-                integer_to_list(Calls), float_to_list(Percent, [{decimals, 2}])],
-            NewWidths = [erlang:max(Old, New) || {Old, New} <- lists:zip([string:length(L) || L <- Line], Widths)],
-            {NewWidths, [Line | Ln]}
+    {Widths, Lines} =
+        lists:foldl(
+          fun ({Mod, {F, A}, Calls, _Value, _VPC, Percent}, {Widths, Ln}) ->
+                  Line = [lists:flatten(io_lib:format("~tw:~tw/~w", [Mod, F, A])),
+                          integer_to_list(Calls), float_to_list(Percent, [{decimals, 2}])],
+                  NewWidths = [max(Old, New) ||
+                                  Old <- [string:length(L) || L <- Line] && New <- Widths],
+                {NewWidths, [Line | Ln]}
         end, {[0, 5, 5], []}, Inspected),
 
     %% figure out formatting line
@@ -1146,15 +1148,17 @@ format_labelled(Device, Label, Total, Inspected) ->
     %% The width of the value is either total or label
     ValueWidth = erlang:max(length(Label), length(integer_to_list(Total))),
 
-    {Widths, Lines} = lists:foldl(
-        fun ({Mod, {F, A}, Calls, Value, VPC, Percent}, {Widths, Ln}) ->
-            Line = [lists:flatten(io_lib:format("~tw:~tw/~w", [Mod, F, A])),
-                integer_to_list(Calls), integer_to_list(Value),
-                float_to_list(VPC, [{decimals, 2}]),
-                float_to_list(Percent, [{decimals, 2}])],
-            NewWidths = [erlang:max(Old, New) || {Old, New} <- lists:zip([string:length(L) || L <- Line], Widths)],
-            {NewWidths, [Line | Ln]}
-        end, {[0, 5, ValueWidth, 8, 5], []}, Inspected),
+    {Widths, Lines} =
+        lists:foldl(
+          fun ({Mod, {F, A}, Calls, Value, VPC, Percent}, {Widths, Ln}) ->
+                  Line = [lists:flatten(io_lib:format("~tw:~tw/~w", [Mod, F, A])),
+                          integer_to_list(Calls), integer_to_list(Value),
+                          float_to_list(VPC, [{decimals, 2}]),
+                          float_to_list(Percent, [{decimals, 2}])],
+                  NewWidths = [max(Old, New) ||
+                                  Old <- [string:length(L) || L <- Line] && New <- Widths],
+                  {NewWidths, [Line | Ln]}
+          end, {[0, 5, ValueWidth, 8, 5], []}, Inspected),
 
     %% figure out formatting line
     Fmt = lists:flatten(io_lib:format("~~.~wts  ~~~ws  ~~~wts  ~~~ws  [~~~ws]~~n", Widths)),