diff --git a/include/net/dsa.h b/include/net/dsa.h
index 50e276dc4c01..fa1c21ab8092 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -209,7 +209,7 @@ struct dsa_switch {
 	 * Parent switch tree, and switch index.
 	 */
 	struct dsa_switch_tree	*dst;
-	int			index;
+	unsigned int		index;
 
 	/* Listener for switch fabric events */
 	struct notifier_block	nb;