diff --git a/scripts/install b/scripts/install
index b6529a2..74b2a26 100755
--- a/scripts/install
+++ b/scripts/install
@@ -9,8 +9,8 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-secret=$(ynh_string_random --length=32 | base64)
-cron_key=$(ynh_string_random --length=32 | base64)
+secret=$(openssl rand -base64 32)
+cron_key=$(openssl rand -base64 32)
 
 #=================================================
 # INSTALL DEPENDENCIES