diff --git a/scripts/install b/scripts/install
index 45ba80e..4faa57f 100755
--- a/scripts/install
+++ b/scripts/install
@@ -14,9 +14,10 @@ source /usr/share/yunohost/helpers
 #=================================================
 # Here is a small hack to avoid multi install CI test to fail due 
 # to same ssh_user provided
-if [[ "${PACKAGE_CHECK_EXEC:-}" = "1" ]] ; then
+if [[ "${PACKAGE_CHECK_EXEC:-}" = "1" ]] && [[ "$YNH_APP_INSTANCE_NUMBER" != "1" ]] ; then
     ssh_user+="$YNH_APP_INSTANCE_NUMBER"
 fi
+
 ynh_system_user_exists --username=$ssh_user && ynh_die --message="This user already exists"
 
 #=================================================