diff --git a/classes/local/outagelib.php b/classes/local/outagelib.php
index 26737bb..0597162 100644
--- a/classes/local/outagelib.php
+++ b/classes/local/outagelib.php
@@ -187,8 +187,8 @@ class outagelib {
         }
         self::$injectcalled = true;
 
-        // Do not inject into admin/settings.php, see Issue #65.
-        if ($_SERVER['SCRIPT_FILENAME'] === $CFG->dirroot.'/admin/settings.php') {
+        // Do not inject into admin/settings.php.
+        if ($_SERVER['SCRIPT_NAME'] == '/'.$CFG->admin.'/settings.php') {
             return false;
         }
 
diff --git a/tests/phpunit/local/outagelib_test.php b/tests/phpunit/local/outagelib_test.php
index ab6101c..736f85c 100644
--- a/tests/phpunit/local/outagelib_test.php
+++ b/tests/phpunit/local/outagelib_test.php
@@ -278,7 +278,8 @@ class outagelib_test extends advanced_testcase {
         self::assertEmpty($CFG->additionalhtmltopofbody);
 
         // Pretend we are there...
-        $_SERVER['SCRIPT_FILENAME'] = $CFG->dirroot.'/admin/settings.php';
+        $_SERVER['SCRIPT_FILENAME'] = '/var/www/alternativepath/admin/settings.php'; // Issue #88 regression test.
+        $_SERVER['SCRIPT_NAME'] = '/admin/settings.php';
         outagelib::reinject();
 
         self::assertEmpty($CFG->additionalhtmltopofbody);