1 files changed, 1 insertions, 1 deletions

diff --git a/lib/idr.c b/lib/idr.c
index d0f1acdbfa3a..09cbe2b69edb 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -120,7 +120,7 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa)
         int n, m, sh;
         struct idr_layer *p, *new;
         int l, id, oid;
-        long bm;
+        unsigned long bm;
 
         id = *starting_id;
  restart: