diff --git a/source/aggregation.txt b/source/aggregation.txt
index 19ae0d1b46a..b587528286f 100644
--- a/source/aggregation.txt
+++ b/source/aggregation.txt
@@ -6,7 +6,7 @@ Aggregation
 
 .. default-domain:: mongodb
 
-Aggregations operations process data records and return computed
+Aggregations are operations that process data records and return computed
 results. Aggregation operations group values from multiple documents
 together, and can perform a variety of operations on the grouped data
 to return a single result. MongoDB provides three ways to perform