diff --git a/app/config.py b/app/config.py
index 39ab2cd0e..b7ae9f2ed 100644
--- a/app/config.py
+++ b/app/config.py
@@ -109,7 +109,7 @@ class Preview(Config):
     LOGO_UPLOAD_BUCKET_NAME = 'public-logos-preview'
     MOU_BUCKET_NAME = 'notify.works-mou'
     NOTIFY_ENVIRONMENT = 'preview'
-    CHECK_PROXY_HEADER = True
+    CHECK_PROXY_HEADER = False
 
 
 class Staging(Config):