diff --git a/ssh/agent/server_test.go b/ssh/agent/server_test.go
index b5e92a6..ec9cdee 100644
--- a/ssh/agent/server_test.go
+++ b/ssh/agent/server_test.go
@@ -150,6 +150,9 @@
 		if err := addKeyToAgent(v); err != nil {
 			t.Errorf("error adding key type %s, %v", k, err)
 		}
+		if err := addCertToAgentSock(v, nil); err != nil {
+			t.Errorf("error adding key type %s, %v", k, err)
+		}
 	}
 }