diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index 9eb69010c34e..2caa79a008ad 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -1043,6 +1043,15 @@ static void iolat_release(struct rcu_head *rcu)
 
 static void iolatency_pd_free(struct blkg_policy_data *pd)
 {
+	struct blkcg_gq *blkg = pd_to_blkg(pd);
+
+	/*
+	 * Groups throttled as collateral have min_lat_nsec == 0, so
+	 * iolatency_pd_offline() leaves their delay set.  Drop it here, where
+	 * no in-flight bio can re-arm it via check_scale_change().
+	 */
+	if (blkg)
+		blkcg_clear_delay(blkg);
 	call_rcu(&pd->rcu_head, iolat_release);
 }