diff --git a/source/reference/aggregation-commands-comparison.txt b/source/reference/aggregation-commands-comparison.txt
index 7d6f9892d66..314751df1ff 100644
--- a/source/reference/aggregation-commands-comparison.txt
+++ b/source/reference/aggregation-commands-comparison.txt
@@ -112,7 +112,7 @@ MongoDB aggregation commands.
        :pipeline:`$out` for details.
 
        With :pipeline:`$merge`, you can output to a new or existing
-       collection. For existing cllections, you can specify how to
+       collection. For existing collections, you can specify how to
        incorporate the results into the output collection (insert new
        documents, merge documents, replace documents, keep existing
        documents, fail the operation, process documents with a custom
@@ -147,4 +147,4 @@ MongoDB aggregation commands.
 
 .. seealso::
 
-   :doc:`/reference/map-reduce-to-aggregation-pipeline`
\ No newline at end of file
+   :doc:`/reference/map-reduce-to-aggregation-pipeline`