1 files changed, 2 insertions, 2 deletions

diff --git a/coreutils/tr.c b/coreutils/tr.c
index d0af63a36..0d3284900 100644
--- a/coreutils/tr.c
+++ b/coreutils/tr.c
@@ -208,8 +208,8 @@ int tr_main(int argc ATTRIBUTE_UNUSED, char **argv)
                 if (*argv) {
                         if (argv[0][0] == '\0')
                                 bb_error_msg_and_die("STRING2 cannot be empty");
-                        output_length = expand(*argv, output);
-                        map(vector, tr_buf, input_length, output, output_length);
+                        output_length = expand(*argv, (char *)output);
+                        map(vector, (unsigned char *)tr_buf, input_length, output, output_length);
                 }
                 for (i = 0; i < input_length; i++)
                         invec[(unsigned char)tr_buf[i]] = TRUE;