diff --git a/internal/httpfetcher/httpfetcher.go b/internal/httpfetcher/httpfetcher.go
index f4c705e..29373f4 100644
--- a/internal/httpfetcher/httpfetcher.go
+++ b/internal/httpfetcher/httpfetcher.go
@@ -618,8 +618,8 @@ func isBlockedIP(ip net.IP, blocked []netip.Prefix) bool {
 	addr = addr.Unmap()
 
 	// ip read as IPv4 where it is or holds an IPv4 address, otherwise the
-	// zero netip.Addr, which no prefix contains. It differs from addr only
-	// for an IPv4-compatible address.
+	// zero netip.Addr, which no prefix contains. Matching asIPv4 as well as
+	// addr refuses more only for an IPv4-compatible address.
 	asIPv4, _ := netip.AddrFromSlice(ipv4CompatibleToIPv4(ip).To4())
 
 	return slices.ContainsFunc(blocked, func(prefix netip.Prefix) bool {