diff --git a/sys/dev/ofw/ofw_bus_subr.h b/sys/dev/ofw/ofw_bus_subr.h
index 53a609b5fa3..d2740dd94fb 100644
--- a/sys/dev/ofw/ofw_bus_subr.h
+++ b/sys/dev/ofw/ofw_bus_subr.h
@@ -101,4 +101,7 @@ const struct ofw_compat_data *
 /* Helper routine for checking existence of a prop */
 int ofw_bus_has_prop(device_t, const char *);
 
+/* Helper to search for a child with a given compat prop */
+phandle_t ofw_bus_find_compatible(phandle_t, const char *);
+
 #endif /* !_DEV_OFW_OFW_BUS_SUBR_H_ */