diff --git a/src/stream/src/executor/over_window/general.rs b/src/stream/src/executor/over_window/general.rs
index 7797eec552c6d..a7698288e3bba 100644
--- a/src/stream/src/executor/over_window/general.rs
+++ b/src/stream/src/executor/over_window/general.rs
@@ -332,7 +332,7 @@ impl<S: StateStore> OverWindowExecutor<S> {
     ) {
         // partition key => (
         //   significant changes happened in the partition,
-        //   no-effect changes happended in the partition,
+        //   no-effect changes happened in the partition,
         // )
         let mut deltas: BTreeMap<DefaultOrdered<OwnedRow>, (PartitionDelta, PartitionDelta)> =
             BTreeMap::new();