diff --git a/server/start.go b/server/start.go
index 37acd3408a54..e61b96204c53 100644
--- a/server/start.go
+++ b/server/start.go
@@ -51,13 +51,13 @@ const (
 	FlagTrace              = "trace"
 	FlagInvCheckPeriod     = "inv-check-period"
 
-	FlagPruning           = "pruning"
-	FlagPruningKeepRecent = "pruning-keep-recent"
-	FlagPruningInterval   = "pruning-interval"
-	FlagIndexEvents       = "index-events"
-	FlagMinRetainBlocks   = "min-retain-blocks"
-	FlagIAVLCacheSize     = "iavl-cache-size"
-	FlagIAVLFastNode      = "iavl-disable-fastnode"
+	FlagPruning             = "pruning"
+	FlagPruningKeepRecent   = "pruning-keep-recent"
+	FlagPruningInterval     = "pruning-interval"
+	FlagIndexEvents         = "index-events"
+	FlagMinRetainBlocks     = "min-retain-blocks"
+	FlagIAVLCacheSize       = "iavl-cache-size"
+	FlagDisableIAVLFastNode = "iavl-disable-fastnode"
 
 	// state sync-related flags
 	FlagStateSyncSnapshotInterval   = "state-sync.snapshot-interval"
@@ -188,6 +188,8 @@ is performed. Note, when enabled, gRPC will also be automatically enabled.
 	cmd.Flags().Uint64(FlagStateSyncSnapshotInterval, 0, "State sync snapshot interval")
 	cmd.Flags().Uint32(FlagStateSyncSnapshotKeepRecent, 2, "State sync snapshot to keep")
 
+	cmd.Flags().Bool(FlagDisableIAVLFastNode, false, "Disable fast node for IAVL tree")
+
 	// add support for all Tendermint-specific command line options
 	tcmd.AddNodeFlags(cmd)
 	return cmd
diff --git a/simapp/simd/cmd/root.go b/simapp/simd/cmd/root.go
index 42abba0bf2a8..8e6a4667b8a5 100644
--- a/simapp/simd/cmd/root.go
+++ b/simapp/simd/cmd/root.go
@@ -295,7 +295,7 @@ func (a appCreator) newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, a
 		baseapp.SetIndexEvents(cast.ToStringSlice(appOpts.Get(server.FlagIndexEvents))),
 		baseapp.SetSnapshot(snapshotStore, snapshotOptions),
 		baseapp.SetIAVLCacheSize(cast.ToInt(appOpts.Get(server.FlagIAVLCacheSize))),
-		baseapp.SetIAVLDisableFastNode(cast.ToBool(appOpts.Get(server.FlagIAVLFastNode))),
+		baseapp.SetIAVLDisableFastNode(cast.ToBool(appOpts.Get(server.FlagDisableIAVLFastNode))),
 	)
 }