diff --git a/source/core/index-creation.txt b/source/core/index-creation.txt
index 0080663cbd8..24810de0576 100644
--- a/source/core/index-creation.txt
+++ b/source/core/index-creation.txt
@@ -17,8 +17,8 @@ Index Builds on Populated Collections
 
 
 Starting in MongoDB 4.2, index builds use an optimized build process
-holds an exclusive lock on the collection at the beginning and end of
-the index build. The rest of the build process yields to interleaving
+that holds an exclusive lock on the collection at the beginning and end
+of the index build. The rest of the build process yields to interleaving
 read and write operations. For a detailed description of index build
 process and locking behavior, see :ref:`index-build-process`.