diff --git a/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php b/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php
--- a/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php
+++ b/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php
@@ -143,7 +143,7 @@
         $this
           ->newIssue('extension.opcache.devmode')
           ->setShortName(pht('OPcache Config'))
-          ->setName(pht('OPCache Not Configured for Development'))
+          ->setName(pht('OPcache Not Configured for Development'))
           ->setSummary($summary)
           ->setMessage($message)
           ->addPHPConfig('opcache.validate_timestamps')
diff --git a/src/applications/config/view/PhabricatorSetupIssueView.php b/src/applications/config/view/PhabricatorSetupIssueView.php
--- a/src/applications/config/view/PhabricatorSetupIssueView.php
+++ b/src/applications/config/view/PhabricatorSetupIssueView.php
@@ -445,7 +445,7 @@
         'p',
         array(),
         pht(
-          'You can find more information about configuring OPCache in '.
+          'You can find more information about configuring OPcache in '.
           'the %s.',
           phutil_tag(
             'a',
@@ -453,7 +453,7 @@
               'href' => 'http://php.net/manual/opcache.configuration.php',
               'target' => '_blank',
             ),
-            pht('PHP OPCache Documentation'))));
+            pht('PHP OPcache Documentation'))));
     }
 
     $info[] = phutil_tag(