diff --git a/crypto.go b/crypto.go
index 227abc0..25e6875 100644
--- a/crypto.go
+++ b/crypto.go
@@ -28,7 +28,7 @@ func AddrForKey(key ed25519.PublicKey) *address.Address {
 		buf[idx] = ^buf[idx]
 	}
 	var addr address.Address
-	var temp = make([]byte, 0, 128)
+	var temp = make([]byte, 0, 32)
 	done := false
 	ones := byte(0)
 	bits := byte(0)