diff --git a/bin/light-base/src/runtime_service.rs b/bin/light-base/src/runtime_service.rs
index 20b9b800c4..ee55891d35 100644
--- a/bin/light-base/src/runtime_service.rs
+++ b/bin/light-base/src/runtime_service.rs
@@ -1159,6 +1159,10 @@ async fn run_background<TPlat: Platform>(
                     },
                 };
             } else {
+                if let GuardedInner::FinalizedBlockRuntimeUnknown { when_known, .. } = &lock.tree {
+                    when_known.notify(usize::max_value());
+                }
+
                 lock.tree = GuardedInner::FinalizedBlockRuntimeUnknown {
                     when_known: event_listener::Event::new(),
                     tree: {
diff --git a/bin/wasm-node/CHANGELOG.md b/bin/wasm-node/CHANGELOG.md
index cb709b62cf..810d1ab499 100644
--- a/bin/wasm-node/CHANGELOG.md
+++ b/bin/wasm-node/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Fixed
+
+- Properly fix the regression that version 0.6.12 was supposed to fix. ([#2210](https://github.com/paritytech/smoldot/pull/2210))
+
 ## 0.6.12 - 2022-04-04
 
 ### Fixed