diff --git a/crates/watcher/src/lib.rs b/crates/watcher/src/lib.rs
index ced511e6..51316430 100644
--- a/crates/watcher/src/lib.rs
+++ b/crates/watcher/src/lib.rs
@@ -341,7 +341,10 @@ where
                 notifications.push(system_contract_update);
             }
 
-            if logs.len() != notifications.len() {
+            // Check that we haven't generated more notifications than logs
+            // Note: notifications.len() may be less than logs.len() because genesis batch
+            // (batch_index=0) is intentionally skipped
+            if notifications.len() > logs.len() {
                 return Err(L1WatcherError::Logs(FilterLogError::InvalidNotificationCount(
                     logs.len(),
                     notifications.len(),