diff --git a/nselib/ssh2.lua b/nselib/ssh2.lua
index 2d039f929..b4644362b 100644
--- a/nselib/ssh2.lua
+++ b/nselib/ssh2.lua
@@ -315,7 +315,7 @@ fetch_host_key = function( host, port, key_type )
     algorithm = "ECDSA"
     bits = "521"
   elseif key_type == 'ssh-ed25519' then
-    algorithm = "EdDSA"
+    algorithm = "ED25519"
     bits = "256"
   else
     stdnse.debug1("Unsupported key type: %s", key_type )