diff --git a/crates/nostr-sdk-db/src/memory.rs b/crates/nostr-sdk-db/src/memory.rs
index c2b0d2a63..c10264fb4 100644
--- a/crates/nostr-sdk-db/src/memory.rs
+++ b/crates/nostr-sdk-db/src/memory.rs
@@ -34,6 +34,7 @@ pub struct MemoryDatabase {
 impl MemoryDatabase {
     /// New Memory database
     pub fn new() -> Self {
+        // TODO: allow to disable events store to avoid high RAM usage?
         Self::default()
     }