diff --git a/scripts/upgrade b/scripts/upgrade
index cee28e6..3068eee 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -70,19 +70,19 @@ data=$final_path/data
 skel_dist=$final_path/www/skel-dist
 
 if  [ -d "$squelettes" ]; then
-  cp -ar $squelettes /tmp/squelettes
+  cp -a "$squelettes" /tmp/squelettes
 fi
 
 if [ -e "$bdd" ]; then
-  cp -a $bdd /tmp/association.sqlite
+  cp -a "$bdd" /tmp/association.sqlite
 fi
 
 if  [ -d "$data" ]; then
-  cp -ar $data /tmp/data
+  cp -a "$data" /tmp/data
 fi
 
 if [ -d "$skel_dist" ]; then
-  cp -ar $skel_dist /tmp/skel-dist
+  cp -a "$skel_dist" /tmp/skel-dist
 fi
 
 #=================================================
@@ -106,12 +106,12 @@ then
 
   if  [ -d "$backup_squelettes" ]
   then
-    cp -ar $backup_squelettes $final_path/www/squelettes
+    cp -a "$backup_squelettes" $final_path/www/squelettes
   fi
 
   if [ -e "$backup_bdd" ]
   then
-    cp -a $backup_bdd $final_path/association.sqlite
+    cp -a "$backup_bdd" $final_path/association.sqlite
   fi
 
   chown -R $app:$app $final_path
@@ -153,12 +153,12 @@ then
 
   if  [ -d "$backup_squelettes" ]
   then
-    cp -ar $backup_squelettes $final_path/www/squelettes
+    cp -a "$backup_squelettes" $final_path/www/squelettes
   fi
 
   if [ -e "$backup_bdd" ]
   then
-    cp -a $backup_bdd $final_path/association.sqlite
+    cp -a "$backup_bdd" $final_path/association.sqlite
   fi
 
   chown -R $app:$app $final_path
@@ -227,25 +227,25 @@ backup_skel_dist=/tmp/skel-dist
 
 if  [ -d "$backup_squelettes" ]
 then
-  cp -ar $backup_squelettes $final_path/www/squelettes
+  cp -a "$backup_squelettes" $final_path/www/squelettes
   ynh_secure_remove  $backup_squelettes
 fi
 
 if [ -e "$backup_bdd" ]
 then
-  cp -a $backup_bdd $final_path/association.sqlite
+  cp -a "$backup_bdd" $final_path/association.sqlite
   ynh_secure_remove $backup_bdd
 fi
 
 if  [ -d "$backup_data" ]
 then
-  cp -ar $backup_data $final_path/data
+  cp -a "$backup_data" $final_path/data
   ynh_secure_remove  $backup_data
 fi
 
 if  [ -d "$backup_skel_dist" ]
 then
-  cp -ar $backup_skel_dist $final_path/www/skel-dist
+  cp -a "$backup_skel_dist" $final_path/www/skel-dist
   ynh_secure_remove  $backup_skel_dist
 fi