diff --git a/metropolis/test/launch/insecure_key.go b/metropolis/test/launch/insecure_key.go
index b67986f..72af26f 100644
--- a/metropolis/test/launch/insecure_key.go
+++ b/metropolis/test/launch/insecure_key.go
@@ -26,7 +26,7 @@
 	// InsecurePrivateKey is a ED25519 key that can be used during development as
 	// a fixed Owner Key when bootstrapping new clusters.
 	InsecurePrivateKey = ed25519.NewKeyFromSeed([]byte(
-		"\xb5\xcf\x35\x0f\xbf\xfb\xea\xfa\xa0\xf0\x29\x9d\xfa\xf7\xca\x6f"+
+		"\xb5\xcf\x35\x0f\xbf\xfb\xea\xfa\xa0\xf0\x29\x9d\xfa\xf7\xca\x6f" +
 			"\xa2\xc2\xc7\x87\xd7\x03\x3e\xb2\x11\x4f\x36\xe0\x22\x73\x4f\x87"))
 	// InsecurePublicKey is the ED25519 public key corresponding to
 	// InsecurePrivateKey.
@@ -38,4 +38,3 @@
 		OwnerPublicKey: InsecurePublicKey,
 	}
 )
-