1 files changed, 3 insertions, 1 deletions

diff --git a/libbb/pw_encrypt_des.c b/libbb/pw_encrypt_des.c
index 52548d623..c8e02ddff 100644
--- a/libbb/pw_encrypt_des.c
+++ b/libbb/pw_encrypt_des.c
@@ -778,8 +778,10 @@ des_crypt(struct des_ctx *ctx, char output[DES_OUT_BUFSIZE],
         to64_msb_first(output + 2, (r0 >> 8));
         /* bits 7..0 of r0 and 31..16 of r1 */
         to64_msb_first(output + 6, (r0 << 16) | (r1 >> 16));
-        /* (bits 15..0 of r1 + 00) and NUL byte */
+        /* bits 15..0 of r1 and two zero bits (plus extra zero byte) */
         to64_msb_first(output + 10, (r1 << 8));
+        /* extra zero byte is encoded as '.', fixing it */
+        output[13] = '\0';
 #endif
 
         return output;