diff --git a/debian/changelog b/debian/changelog
index 021886f..2dd488f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@ cm4all-lukko (0.26) unstable; urgency=low
 
   * listener: send TOO_MANY_CONNECTIONS if max_connections_per_ip is
     exceeded
+  * ssh: show "Lukko" in protocol version exchange
 
  --   
 
diff --git a/src/ssh/IdentificationString.hxx b/src/ssh/IdentificationString.hxx
index 0dc15e7..16a599e 100644
--- a/src/ssh/IdentificationString.hxx
+++ b/src/ssh/IdentificationString.hxx
@@ -13,7 +13,7 @@ namespace SSH {
 /**
  * This software's identification string according to RFC 4253 4.2
  */
-static constexpr std::string_view IDENTIFICATION_STRING = "SSH-2.0-CM4all_" VERSION " CM4all\r\n";
+static constexpr std::string_view IDENTIFICATION_STRING = "SSH-2.0-Lukko_" VERSION " CM4all\r\n";
 
 } // namespace SSH