diff --git a/plugin/scheduler_example/evict_leader.go b/plugin/scheduler_example/evict_leader.go
index 0f0388a4ad6..b40633dfb2e 100644
--- a/plugin/scheduler_example/evict_leader.go
+++ b/plugin/scheduler_example/evict_leader.go
@@ -132,8 +132,7 @@ func (conf *evictLeaderSchedulerConfig) Persist() error {
 	if err != nil {
 		return err
 	}
-	conf.storage.SaveScheduleConfig(name, data)
-	return nil
+	return conf.storage.SaveScheduleConfig(name, data)
 }
 
 func (conf *evictLeaderSchedulerConfig) getScheduleName() string {
diff --git a/server/schedulers/evict_leader.go b/server/schedulers/evict_leader.go
index db64f99057c..de3028caee5 100644
--- a/server/schedulers/evict_leader.go
+++ b/server/schedulers/evict_leader.go
@@ -120,8 +120,7 @@ func (conf *evictLeaderSchedulerConfig) Persist() error {
 	if err != nil {
 		return err
 	}
-	conf.storage.SaveScheduleConfig(name, data)
-	return nil
+	return conf.storage.SaveScheduleConfig(name, data)
 }
 
 func (conf *evictLeaderSchedulerConfig) getSchedulerName() string {
diff --git a/server/schedulers/grant_leader.go b/server/schedulers/grant_leader.go
index 8109f8d497a..30e117e6f3b 100644
--- a/server/schedulers/grant_leader.go
+++ b/server/schedulers/grant_leader.go
@@ -114,8 +114,7 @@ func (conf *grantLeaderSchedulerConfig) Persist() error {
 	if err != nil {
 		return err
 	}
-	conf.storage.SaveScheduleConfig(name, data)
-	return nil
+	return conf.storage.SaveScheduleConfig(name, data)
 }
 
 func (conf *grantLeaderSchedulerConfig) getSchedulerName() string {
diff --git a/server/schedulers/scatter_range.go b/server/schedulers/scatter_range.go
index 06640d0fbb4..ea08e5a00b0 100644
--- a/server/schedulers/scatter_range.go
+++ b/server/schedulers/scatter_range.go
@@ -110,8 +110,7 @@ func (conf *scatterRangeSchedulerConfig) Persist() error {
 	if err != nil {
 		return err
 	}
-	conf.storage.SaveScheduleConfig(name, data)
-	return nil
+	return conf.storage.SaveScheduleConfig(name, data)
 }
 
 func (conf *scatterRangeSchedulerConfig) GetRangeName() string {