diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c
index 73e73f6be48a..02eee57d3c0c 100644
--- a/drivers/w1/w1_family.c
+++ b/drivers/w1/w1_family.c
@@ -27,6 +27,7 @@
 
 DEFINE_SPINLOCK(w1_flock);
 static LIST_HEAD(w1_families);
+extern void w1_reconnect_slaves(struct w1_family *f);
 
 static int w1_check_family(struct w1_family *f)
 {