diff --git a/poky/documentation/test-manual/test-manual-understand-autobuilder.rst b/poky/documentation/test-manual/test-manual-understand-autobuilder.rst
index de26777..2444333 100644
--- a/poky/documentation/test-manual/test-manual-understand-autobuilder.rst
+++ b/poky/documentation/test-manual/test-manual-understand-autobuilder.rst
@@ -164,7 +164,7 @@
 on the Autobuilder. We therefore have a stash of commonly used
 repositories pre-cloned on the Workers. Data is fetched from these
 during clones first, then "topped up" with later revisions from any
-upstream when necesary. The cache is maintained by the Autobuilder
+upstream when necessary. The cache is maintained by the Autobuilder
 Worker Janitor. See :ref:`test-manual/test-manual-understand-autobuilder:Autobuilder Worker Janitor`.
 
 .. _test-autobuilder-worker-janitor: