diff --git a/drivers/net/ks8851_mll.c b/drivers/net/ks8851_mll.c
index c060811..b037e19 100644
--- a/drivers/net/ks8851_mll.c
+++ b/drivers/net/ks8851_mll.c
@@ -435,7 +435,7 @@
 		writew(*wptr++, ks->hw_addr);
 }
 
-void ks_enable_qmu(struct ks_net *ks)
+static void ks_enable_qmu(struct ks_net *ks)
 {
 	u16 w;