1 files changed, 2 insertions, 2 deletions

diff --git a/sed.c b/sed.c
index 89b16682f..24b62e5fa 100644
--- a/sed.c
+++ b/sed.c
@@ -223,7 +223,7 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
         idx = index_of_next_unescaped_regexp_delim(sed_cmd, substr, ++idx);
         if (idx == -1)
                 error_msg_and_die("bad format in substitution expression");
-        match = strdup_substr(substr, oldidx, idx);
+        match = xstrndup(substr + oldidx, idx - oldidx);
 
         /* determine the number of back references in the match string */
         /* Note: we compute this here rather than in the do_subst_command()
@@ -242,7 +242,7 @@ static int parse_subst_cmd(struct sed_cmd *sed_cmd, const char *substr)
         idx = index_of_next_unescaped_regexp_delim(sed_cmd, substr, ++idx);
         if (idx == -1)
                 error_msg_and_die("bad format in substitution expression");
-        sed_cmd->replace = strdup_substr(substr, oldidx, idx);
+        sed_cmd->replace = xstrndup(substr + oldidx, idx - oldidx);
 
         /* process the flags */
         while (substr[++idx]) {