diff --git a/libraries/classes/Advisor.php b/libraries/classes/Advisor.php
index 5070885178..8c5903e331 100644
--- a/libraries/classes/Advisor.php
+++ b/libraries/classes/Advisor.php
@@ -23,6 +23,9 @@ use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
  */
 class Advisor
 {
+    const GENERIC_RULES_FILE = 'libraries/advisory_rules_generic.txt';
+    const BEFORE_MYSQL80003_RULES_FILE = 'libraries/advisory_rules_mysql_before80003.txt';
+
     protected $dbi;
     protected $variables;
     protected $globals;
@@ -444,10 +447,10 @@ class Advisor
     protected function defineRulesFiles()
     {
         $isMariaDB = false !== strpos($this->getVariables()['version'], 'MariaDB');
-        $ruleFiles = ['libraries/advisory_rules_generic.txt'];
+        $ruleFiles = [self::GENERIC_RULES_FILE];
         // If MariaDB (= not MySQL) OR MYSQL < 8.0.3, add another rules file.
         if ($isMariaDB || $this->globals['PMA_MYSQL_INT_VERSION'] < 80003) {
-            $ruleFiles[] = 'libraries/advisory_rules_mysql_before80003.txt';
+            $ruleFiles[] = self::BEFORE_MYSQL80003_RULES_FILE;
         }
         return $ruleFiles;
     }
diff --git a/test/classes/AdvisorTest.php b/test/classes/AdvisorTest.php
index 219428dc4b..569b639efc 100644
--- a/test/classes/AdvisorTest.php
+++ b/test/classes/AdvisorTest.php
@@ -70,7 +70,7 @@ class AdvisorTest extends PmaTestCase
     public function testParse()
     {
         $advisor = new Advisor($GLOBALS['dbi'], new ExpressionLanguage());
-        $parseResult = $advisor->parseRulesFile();
+        $parseResult = $advisor->parseRulesFile(Advisor::GENERIC_RULES_FILE);
         $this->assertEquals($parseResult['errors'], array());
     }
 
@@ -127,7 +127,7 @@ class AdvisorTest extends PmaTestCase
     public function testAddRule($rule, $expected, $error)
     {
         $advisor = new Advisor($GLOBALS['dbi'], new ExpressionLanguage());
-        $parseResult = $advisor->parseRulesFile();
+        $parseResult = $advisor->parseRulesFile(Advisor::GENERIC_RULES_FILE);
         $this->assertEquals($parseResult['errors'], array());
         $advisor->setVariable('value', 0);
         $advisor->addRule('fired', $rule);