diff --git a/src/schedule-2.0/scripts/genkey.sh b/src/schedule-2.0/scripts/genkey.sh
index 6b1c718..b0398c8 100755
--- a/src/schedule-2.0/scripts/genkey.sh
+++ b/src/schedule-2.0/scripts/genkey.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 if [ ! -f /var/www/html/schedule/.key ]; then
-    cat /dev/urandom | tr -dc '_A-Za-z0-9' | head -c${1:-32} > /var/www/html/schedule/.key
+    openssl rand -hex 32 > /var/www/html/schedule/.key
 fi