diff --git a/README.md b/README.md
index aac219a..4e982ba 100644
--- a/README.md
+++ b/README.md
@@ -532,6 +532,7 @@ If Firefox is crashing frequently, make sure that:
   - The `membarrier` system call is not blocked by Docker.  See the
     [Allowing the membarrier System Call](#allowing-the-membarrier-system-call)
     for more details.
+  - Make sure the kernel of your Linux distribution is up-to-date.
 
 [TimeZone]: http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
 [here]: https://bugzilla.mozilla.org/show_bug.cgi?id=1338771#c10
diff --git a/appdefs.xml b/appdefs.xml
index f6870bc..8beaaee 100644
--- a/appdefs.xml
+++ b/appdefs.xml
@@ -125,6 +125,7 @@ If {{ defs.app.friendly_name }} is crashing frequently, make sure that:
   - The `membarrier` system call is not blocked by Docker.  See the
     [Allowing the membarrier System Call](#allowing-the-membarrier-system-call)
     for more details.
+  - Make sure the kernel of your Linux distribution is up-to-date.
         </content>
       </section>
       <link>