diff --git a/config/dnscrypt-proxy.toml b/config/dnscrypt-proxy.toml
index 17c9948..8d86b0e 100644
--- a/config/dnscrypt-proxy.toml
+++ b/config/dnscrypt-proxy.toml
@@ -348,6 +348,7 @@ block_ipv6 = true
 
 
 ## Immediately respond to A and AAAA queries for host names without a domain name
+## This also prevents "dotless domain names" from being resolved upstream.
 
 block_unqualified = true