diff --git a/extern/sector-storage/sched_post.go b/extern/sector-storage/sched_post.go
index a3d29d62e..cf22d5f93 100644
--- a/extern/sector-storage/sched_post.go
+++ b/extern/sector-storage/sched_post.go
@@ -81,7 +81,7 @@ func (ps *poStScheduler) Schedule(ctx context.Context, primary bool, spt abi.Reg
 	defer ps.lk.Unlock()
 
 	if len(ps.workers) == 0 {
-		return xerrors.Errorf("cant find %s post worker", ps.postType)
+		return xerrors.Errorf("can't find %s post worker", ps.postType)
 	}
 
 	// Get workers by resource
@@ -120,7 +120,7 @@ type candidateWorker struct {
 
 func (ps *poStScheduler) readyWorkers(spt abi.RegisteredSealProof) (bool, []candidateWorker) {
 	var accepts []candidateWorker
-	//if the gpus of the worker are insufficient or its disable, it cannot be scheduled
+	//if the gpus of the worker are insufficient or it's disabled, it cannot be scheduled
 	for wid, wr := range ps.workers {
 		needRes := wr.info.Resources.ResourceSpec(spt, ps.postType)