diff --git a/apps/sharkey/app/config.yaml b/apps/sharkey/app/config.yaml
index 2727af5..3b95aec 100644
--- a/apps/sharkey/app/config.yaml
+++ b/apps/sharkey/app/config.yaml
@@ -132,6 +132,9 @@ data:
 
     # Sign to ActivityPub GET request (default: true)
     signToActivityPubGet: true
+    # check that inbound ActivityPub GET requests are signed ("authorized fetch")
+    checkActivityPubGetSignature: true
+    
 
     #allowedPrivateNetworks: [
     #  '127.0.0.1/32'