diff --git a/scripts/create_static_site.sh b/scripts/create_static_site.sh
index 21b8b3739a9f7c0bcde8301cbd091e20702e9949..e471fc9cd70b904d92fff1e938ada5e59df0f399 100755
--- a/scripts/create_static_site.sh
+++ b/scripts/create_static_site.sh
@@ -6,8 +6,8 @@ if [ -z "$SITE_PREFIX" ]; then
   SITE_NAME=www
   SITE_URL=$SERVER_URL
 else
-SITE_NAME=$SITE_PREFIX
-SITE_URL=$SITE_NAME.$SERVER_URL
+SITE_NAME=${SITE_PREFIX//./-}
+SITE_URL=$SITE_PREFIX.$SERVER_URL
 fi;
 
 NS=${SERVER_URL/./-}