diff --git a/1-setup.sh b/1-setup.sh
index 65e840f..2263e8f 100644
--- a/1-setup.sh
+++ b/1-setup.sh
@@ -137,7 +137,7 @@ CERT_STATE="Victoria"           # Self signed cert setup, must not be blank
 CERT_LOCATION="Melbourne"       # Self signed cert setup, must not be blank
 CERT_ORG="Itiligent"            # Self signed cert setup, must not be blank
 CERT_OU="I.T."                  # Self signed cert setup, must not be blank
-CERT_DAYS=""                    # Self signed cert setup, days until self signed TLS cert expiry, blank = default 3650
+CERT_DAYS="3650"                # Self signed cert setup, days until self signed TLS cert expiry, blank = default 3650
 LETS_ENCRYPT=""                 # Add Lets Encrypt public TLS cert for Nginx (true/false, self signed TLS not available with this option) 
 LE_DNS_NAME=""                  # Public DNS name for use with Lets Encrypt certificates, must match public DNS
 LE_EMAIL=""                     # Webmaster email for Lets Encrypt notifications