diff --git a/src/string_width_ffi.erl b/src/string_width_ffi.erl
index cb2cbcb..34ab4c6 100644
--- a/src/string_width_ffi.erl
+++ b/src/string_width_ffi.erl
@@ -27,10 +27,11 @@ get_terminal_size() ->
                 {_, false} ->
                     {error, nil};
                 {LinesStr, ColumnsStr} ->
-                    case catch {list_to_integer(LinesStr), list_to_integer(ColumnsStr)} of
-                        {EnvRows, EnvCols} when is_integer(EnvRows) andalso is_integer(EnvCols) ->
-                            {ok, {EnvRows, EnvCols}};
-                        _ ->
+                    try {list_to_integer(LinesStr), list_to_integer(ColumnsStr)} of
+                        {EnvRows, EnvCols} ->
+                            {ok, {EnvRows, EnvCols}}
+                    catch
+                        _:_ ->
                             {error, nil}
                     end
             end