diff --git a/src/applications/config/check/PhabricatorSetupCheckAPC.php b/src/applications/config/check/PhabricatorSetupCheckAPC.php
--- a/src/applications/config/check/PhabricatorSetupCheckAPC.php
+++ b/src/applications/config/check/PhabricatorSetupCheckAPC.php
@@ -65,7 +65,7 @@
         "development installs so you don't need to restart your webserver ".
         "after making changes to the code.\n\n".
         "You can enable 'apc.stat', or disable 'phabricator.developer-mode', ".
-        "or safely ignore this warning if you have some reasonining behind ".
+        "or safely ignore this warning if you have some reasoning behind ".
         "your current configuration.");
     }