diff --git a/drivers/1wire/1wire.c b/drivers/1wire/1wire.c
index 599f351a9f..1f47a50ff2 100644
--- a/drivers/1wire/1wire.c
+++ b/drivers/1wire/1wire.c
@@ -524,7 +524,7 @@ int onewire_search(FAR struct onewire_master_s *master,
 
       if (last_zero == last_bit || last_zero == -1)
         {
-          i2cinfo("search complete, rom=0x%llx\n", rom);
+          i2cinfo("search complete, rom=0x%" PRIx64 "\n", rom);
 
           /* Found last device, quit searching. */