diff --git a/weed/shell/command_volume_fsck.go b/weed/shell/command_volume_fsck.go
index 29c724c49..7a3932aa1 100644
--- a/weed/shell/command_volume_fsck.go
+++ b/weed/shell/command_volume_fsck.go
@@ -136,7 +136,7 @@ func (c *commandVolumeFsck) Do(args []string, commandEnv *CommandEnv, writer io.
 		return fmt.Errorf("read filer buckets path: %v", err)
 	}
 
-	collectCutoffFromAtNs := time.Now().UnixNano()
+	collectCutoffFromAtNs := time.Now().Add(-*cutoffTimeAgo).UnixNano()
 	// collect each volume file ids
 	for dataNodeId, volumeIdToVInfo := range dataNodeVolumeIdToVInfo {
 		for volumeId, vinfo := range volumeIdToVInfo {
@@ -150,8 +150,7 @@ func (c *commandVolumeFsck) Do(args []string, commandEnv *CommandEnv, writer io.
 				delete(volumeIdToVInfo, volumeId)
 				continue
 			}
-			cutoffFrom := time.Now().Add(-*cutoffTimeAgo).UnixNano()
-			err = c.collectOneVolumeFileIds(dataNodeId, volumeId, vinfo, uint64(cutoffFrom))
+			err = c.collectOneVolumeFileIds(dataNodeId, volumeId, vinfo, uint64(collectCutoffFromAtNs))
 			if err != nil {
 				return fmt.Errorf("failed to collect file ids from volume %d on %s: %v", volumeId, vinfo.server, err)
 			}