diff --git a/instance-scripts/scripts/atrium.sh b/instance-scripts/scripts/atrium.sh
index 4644edfbca01081e4ed824a47a7e1681acf9e2e0..b95a734fdba749ec98e56c693c308e16a6030ab6 100644
--- a/instance-scripts/scripts/atrium.sh
+++ b/instance-scripts/scripts/atrium.sh
@@ -9,7 +9,7 @@
 # echo $(scw-userdata user_password) | argon2 $(echo $RANDOM | md5sum | head -c 10) -id -l 32 -e
 #
 
-export USER_PASSWORD_HASH=$(echo "$(scw-userdata user_password)" | argon2 "$(echo $RANDOM | md5sum | head -c 10)" -id -l 32 -e)
+export USER_PASSWORD_HASH=$(echo -n "$(scw-userdata user_password)" | argon2 "$(echo $RANDOM | md5sum | head -c 12)" -id -l 32 -e)
 
 mkdir -p /root/atrium/data && mkdir -p /root/atrium/letsencrypt_cache
 curl https://forge.grandlyon.com/systemes-dinformation/alpha/projects/labo-rust/-/raw/develop/instance-scripts/config-files/atrium.yaml -o root/atrium/atrium.yaml