diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 78e4c01..f30bad9 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -677,7 +677,7 @@
 }
 EXPORT_SYMBOL_GPL(dsa_register_switch);
 
-void _dsa_unregister_switch(struct dsa_switch *ds)
+static void _dsa_unregister_switch(struct dsa_switch *ds)
 {
 	struct dsa_switch_tree *dst = ds->dst;