diff --git a/dnsapi/dns_namecom.sh b/dnsapi/dns_namecom.sh
index fae56d65..3af8bf4c 100755
--- a/dnsapi/dns_namecom.sh
+++ b/dnsapi/dns_namecom.sh
@@ -174,7 +174,7 @@ _namecom_get_root() {
 
   # Need to exclude the last field (tld)
   numfields=$(echo "$domain" | _egrep_o "\." | wc -l)
-  while [ $i -le $numfields ]; do
+  while [ $i -le "$numfields" ]; do
     host=$(printf "%s" "$domain" | cut -d . -f $i-100)
     _debug host "$host"
     if [ -z "$host" ]; then