diff --git a/source/reference/operator/isolated.txt b/source/reference/operator/isolated.txt
index 22b813e94ec..ccab621da65 100644
--- a/source/reference/operator/isolated.txt
+++ b/source/reference/operator/isolated.txt
@@ -7,7 +7,7 @@ $isolated
 .. operator:: $isolated
 
    :operator:`$isolated` isolation operator **isolates** a write
-   operation that affect multiple documents from other write operations.
+   operation that affects multiple documents from other write operations.
    
    .. note::