diff --git a/config.yaml b/config.yaml
index dd75adda..7c53b5eb 100644
--- a/config.yaml
+++ b/config.yaml
@@ -57,9 +57,9 @@ options:
         description: SSL key to use with certificate specified as ssl_cert.
     offline-compression:
         type: string
-        default: yes
+        default: "yes"
         description: Use pre-generated Less compiled JS and CSS.
     debug:
         type: string
-        default: no
+        default: "no"
         description: Show Django debug messages.