1 files changed, 1 insertions, 2 deletions

diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index 34cabc934..956de15ae 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -276,8 +276,7 @@ static void make_device(char *path, int delete)
                 putenv(s);
                 if (system(command) == -1)
                         bb_perror_msg_and_die("can't run '%s'", command);
-                s[4] = '\0';
-                unsetenv(s);
+                unsetenv("MDEV");
                 free(s);
                 free(command);
         }