diff --git a/README.md b/README.md
index 8ae84c1fb3..10bf02c111 100644
--- a/README.md
+++ b/README.md
@@ -168,7 +168,7 @@ de votre installation ScoDoc 7 pour passer à ScoDoc 8 (*ne pas utiliser en prod
 
 ## Création d'un département
 
-    sudo su
+    su scodoc # si besoin
     cd /opt/scodoc
     source venv/bin/activate
     flask sco-create-dept DEPT
@@ -177,7 +177,7 @@ où `DEPT` est le nom du département (un acronyme en majuscule, comme "RT", "GE
 
 ### Suppression d'un département
 
-    sudo su
+    su scodoc # si besoin
     cd /opt/scodoc
     source venv/bin/activate
     flask sco-delete-dept DEPT
diff --git a/scodoc.py b/scodoc.py
index 9f6a610230..a921f2a2e4 100755
--- a/scodoc.py
+++ b/scodoc.py
@@ -152,10 +152,7 @@ def user_password(username, password=None):  # user-password
 @click.argument("dept")
 def sco_delete_dept(dept):  # sco-delete-dept
     "Delete existing departement"
-    if os.getuid() != 0:
-        sys.stderr.write("sco_delete_dept: must be run by root\n")
-        return 1
-    if os.system('cd tools && ./delete_dept.sh -n "{}"'.format(dept)):
+    if os.system('tools/delete_dept.sh -n "{}"'.format(dept)):
         sys.stderr.write("error deleting dept " + dept)
         return 1
     return 0
@@ -165,10 +162,7 @@ def sco_delete_dept(dept):  # sco-delete-dept
 @click.argument("dept")
 def sco_create_dept(dept):  # sco-create-dept
     "Create new departement"
-    if os.getuid() != 0:
-        sys.stderr.write("sco_create_dept: must be run by root\n")
-        return 1
-    if os.system(f'cd tools && ./create_dept.sh -n "{dept}"'):
+    if os.system(f'tools/create_dept.sh -n "{dept}"'):
         sys.stderr.write(f"error creating dept {dept}\n")
         return 1
     return 0
diff --git a/tools/create_dept.sh b/tools/create_dept.sh
index 8eb86036a2..4d81ce449b 100755
--- a/tools/create_dept.sh
+++ b/tools/create_dept.sh
@@ -17,7 +17,7 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 source "$SCRIPT_DIR/config.sh"
 source "$SCRIPT_DIR/utils.sh"
 
-check_uid_root "$0"
+[ "$USER" = "$SCODOC_USER" ] || die "$0 must run as user $SCODOC_USER"
 
 cd "$SCRIPT_DIR"
 
@@ -61,19 +61,17 @@ then
   exit 1
 fi
 
-# --- Ensure postgres user "scodoc" ($POSTGRES_USER) exists
-init_postgres_user
-
 # -----------------------  Create Dept database
-su -c ./create_database.sh "$POSTGRES_SUPERUSER"
+# (créée en tant qu'utilisateur scodoc)
+./create_database.sh
 
 # ----------------------- Initialize table database
 # POSTGRES_USER == regular unix user (scodoc)
 if [ "$interactive" = 1 ]
 then
-  su -c ./initialize_database.sh "$POSTGRES_USER"
+  ./initialize_database.sh
 else
-  su -c ./initialize_database.sh "$POSTGRES_USER" > /dev/null 2>&1
+  ./initialize_database.sh > /dev/null 2>&1
 fi
 
 
@@ -84,17 +82,10 @@ echo "dbname=${db_name}" > "$cfg_pathname"
 
 if [ "$interactive" = 1 ]
 then
-  # ----------------------- Force mise à jour
-  echo -n "Voulez vous mettre a jour ScoDoc (tres recommande) ? (y/n) [y] "
-  read -r ans
-  if [ "$(norm_ans "$ans")" != 'N' ]
-  then
-      (cd "$SCODOC_DIR/tools" || terminate "no config directory"; ./upgrade.sh)
-  fi
   # ----------------------- 
   echo
   echo " Departement $DEPT cree"
   echo
   echo " Attention: la base de donnees n'a pas de copies de sauvegarde"
-  echo
+  echo "(XXX section à revoir en ScoDoc 8.1)" # #sco8
 fi
diff --git a/tools/install_debian10.sh b/tools/install_debian10.sh
index df2b92725f..cc50925adb 100755
--- a/tools/install_debian10.sh
+++ b/tools/install_debian10.sh
@@ -105,6 +105,11 @@ then
     yes | ufw enable
 fi
 
+# --- POSTGRESQL
+# --- Ensure postgres user "scodoc" ($POSTGRES_USER) exists
+init_postgres_user
+
+
 # --- XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX ---
 echo
 echo "WARNING: version ScoDoc8 expérimentale"