diff --git a/scripts/install b/scripts/install
index 21d7e4a..4b2f531 100644
--- a/scripts/install
+++ b/scripts/install
@@ -122,13 +122,8 @@ ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --targ
 for i in 1 2 3 4 5 6 7 8
 do
 	j=$(ynh_string_random --length=40)
-	if [ "$j" = "" ];
-	then
-		# For obscure reasons, the loop is too fast at execution
-		sleep 1
-		j=$(ynh_string_random --length=40)
-	fi
 	ynh_replace_string --match_string="KEY$i" --replace_string="$j" --target_file=$final_path/wp-config.php
+	sleep 0.5
 done
 
 #=================================================