diff --git a/internal/datacoord/channel_manager.go b/internal/datacoord/channel_manager.go
index d9bf9f4339..6c4c063cfa 100644
--- a/internal/datacoord/channel_manager.go
+++ b/internal/datacoord/channel_manager.go
@@ -149,7 +149,7 @@ func (c *ChannelManager) bgCheckChannelsWork(ctx context.Context) {
 			c.mu.Lock()
 
 			channels := c.store.GetNodesChannels()
-			reallocs, err := c.bgChecker(channels, time.Now())
+			reallocates, err := c.bgChecker(channels, time.Now())
 			if err != nil {
 				log.Warn("channel manager bg check failed", zap.Error(err))
 
@@ -157,7 +157,7 @@ func (c *ChannelManager) bgCheckChannelsWork(ctx context.Context) {
 				continue
 			}
 
-			updates := c.reassignPolicy(c.store, reallocs)
+			updates := c.reassignPolicy(c.store, reallocates)
 			log.Debug("channel manager bg check reassign", zap.Array("updates", updates))
 			for _, update := range updates {
 				if update.Type == Add {