diff --git a/lib/librte_rcu/rte_rcu_qsbr.c b/lib/librte_rcu/rte_rcu_qsbr.c
index b4ed010459..de25464647 100644
--- a/lib/librte_rcu/rte_rcu_qsbr.c
+++ b/lib/librte_rcu/rte_rcu_qsbr.c
@@ -234,7 +234,7 @@ rte_rcu_qsbr_dump(FILE *f, struct rte_rcu_qsbr *v)
 		id = i << __RTE_QSBR_THRID_INDEX_SHIFT;
 		while (bmap) {
 			t = __builtin_ctzl(bmap);
-			fprintf(f, "%d ", id + t);
+			fprintf(f, "%u ", id + t);
 
 			bmap &= ~(1UL << t);
 		}
@@ -252,7 +252,7 @@ rte_rcu_qsbr_dump(FILE *f, struct rte_rcu_qsbr *v)
 		id = i << __RTE_QSBR_THRID_INDEX_SHIFT;
 		while (bmap) {
 			t = __builtin_ctzl(bmap);
-			fprintf(f, "thread ID = %d, count = %"PRIu64", lock count = %u\n",
+			fprintf(f, "thread ID = %u, count = %"PRIu64", lock count = %u\n",
 				id + t,
 				__atomic_load_n(
 					&v->qsbr_cnt[id + t].cnt,