--- a/test/test_dropbearconvert.py
+++ b/test/test_dropbearconvert.py
@@ -28,6 +28,9 @@
 	if kt == 'dss' and keyformat is None:
 		pytest.skip("dss doesn't support openssh format")
 
+	if keytype == "ed25519" and keyformat == "PEM":
+		pytest.skip("ssh-keygen does not support PEM format for type ed25519")
+
 	os_kt = kt
 	if os_kt == 'dss':
 		# OpenSSH calls it 'dsa', Dropbear calls it 'dss'