diff --git a/simd/cmd/root.go b/simd/cmd/root.go
index 568a1fe3505e..9b0965458d70 100644
--- a/simd/cmd/root.go
+++ b/simd/cmd/root.go
@@ -301,6 +301,7 @@ func newApp(
 		baseapp.SetTrace(cast.ToBool(appOpts.Get(server.FlagTrace))),
 		baseapp.SetIndexEvents(cast.ToStringSlice(appOpts.Get(server.FlagIndexEvents))),
 		baseapp.SetSnapshot(snapshotStore, snapshotOptions),
+		baseapp.SetIAVLCacheSize(cast.ToInt(appOpts.Get(server.FlagIAVLCacheSize))),
 	)
 }