diff --git a/fs/dax.c b/fs/dax.c
index 3e0babeb0365..95341af1a966 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -488,7 +488,7 @@ static void *grab_mapping_entry(struct xa_state *xas,
 		if (dax_is_conflict(entry))
 			goto fallback;
 		if (!xa_is_value(entry)) {
-			xas_set_err(xas, EIO);
+			xas_set_err(xas, -EIO);
 			goto out_unlock;
 		}