fix the build

fix the build

diff --git a/config/discourse_defaults.conf b/config/discourse_defaults.conf
index 658f2ca..b841af9 100644
--- a/config/discourse_defaults.conf
+++ b/config/discourse_defaults.conf
@@ -195,7 +195,7 @@ s3_bucket =
 s3_region =
 s3_access_key_id =
 s3_secret_access_key =
-s3_use_iam_profile = false
+s3_use_iam_profile =
 s3_cdn_url =
 s3_endpoint =

GitHub sha: 8ef831a1