diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go
index 35bf576e1d..85d0c3acaa 100644
--- a/cmd/geth/chaincmd.go
+++ b/cmd/geth/chaincmd.go
@@ -67,6 +67,9 @@ It expects the genesis file as argument.`,
 			utils.DataDirFlag,
 			utils.CacheFlag,
 			utils.LightModeFlag,
+			utils.GCModeFlag,
+			utils.CacheDatabaseFlag,
+			utils.CacheGCFlag,
 		},
 		Category: "BLOCKCHAIN COMMANDS",
 		Description: `