diff --git a/sshd/client_test.go b/sshd/client_test.go
index b263291..80499ca 100644
--- a/sshd/client_test.go
+++ b/sshd/client_test.go
@@ -21,6 +21,9 @@ func (a RejectAuth) Check(net.Addr, ssh.PublicKey) (bool, error) {
 
 func TestClientReject(t *testing.T) {
 	signer, err := NewRandomSigner(512)
+	if err != nil {
+		t.Fatal(err)
+	}
 	config := MakeAuth(RejectAuth{})
 	config.AddHostKey(signer)
 
diff --git a/sshd/net_test.go b/sshd/net_test.go
index 2ec34d4..b9b3f9f 100644
--- a/sshd/net_test.go
+++ b/sshd/net_test.go
@@ -26,6 +26,9 @@ func TestServerInit(t *testing.T) {
 
 func TestServeTerminals(t *testing.T) {
 	signer, err := NewRandomSigner(512)
+	if err != nil {
+		t.Fatal(err)
+	}
 	config := MakeNoAuth()
 	config.AddHostKey(signer)