diff --git a/consul-bootstrap.sh b/consul-bootstrap.sh
index c44acd4..900edf7 100755
--- a/consul-bootstrap.sh
+++ b/consul-bootstrap.sh
@@ -40,8 +40,12 @@ systemctl daemon-reload
 
 # parameter setup
 consultype="client"
-bind_ip=""
-server_ip=""
+bind_ip=null
+server_ip=null
+
+if [ "$#" -eq 0 ]
+  echo "No options specified, exiting."
+  exit 1
 
 # read parameters
 while [[ "$#" -gt 0 ]]
@@ -62,7 +66,7 @@ done
 
 # write config file
 
-if [ $consultype -eq "client" ]
+if [ $consultype == "client" ]
 then
 
   cat >> /etc/consul.d/consul.hcl <<EOF