diff --git a/bin/compile b/bin/compile
index ced5571db3b8b36db516df6e9c33502f65f835e1..f145b1b83c52c06b66d1fc8646a781f7260cb73c 100755
--- a/bin/compile
+++ b/bin/compile
@@ -108,10 +108,9 @@ try:
         url = urlparse.urlparse(os.environ['DATABASE_URL'])
 
         # Ensure default database exists.
-        DATABASES['default'] =  DATABASES.get('default', {})
+        DATABASES['default'] = DATABASES.get('default', {})
 
-        # We use update here to preserve other keys we
-        # don't care about (like OPTIONS)
+        # Update with environment configuration.
         DATABASES['default'].update({
             'NAME': url.path[1:],
             'USER': url.username,