diff -u b/core/modules/update/update.compare.inc b/core/modules/update/update.compare.inc
--- b/core/modules/update/update.compare.inc
+++ b/core/modules/update/update.compare.inc
@@ -381,7 +381,7 @@
  * version is used. There's also a check to make sure that this function never
  * recommends an earlier release than the currently installed major version.
  *
- * Given a target major version, the available releases is scanned looking for
+ * Given a target major version, the available releases are scanned looking for
  * the specific release to recommend (avoiding beta releases and development
  * snapshots if possible). For the target major version, it finds the highest
  * patch level. If there is a release at that patch level with no extra ("beta",