diff --git a/lib/behat/classes/behat_context_helper.php b/lib/behat/classes/behat_context_helper.php
index 99641cd629b..ffd94cd35bd 100644
--- a/lib/behat/classes/behat_context_helper.php
+++ b/lib/behat/classes/behat_context_helper.php
@@ -44,12 +44,16 @@ class behat_context_helper {
      */
     protected static $environment = null;
 
-
     /**
      * @var Escaper::escapeLiteral
      */
     protected static $escaper;
 
+    /**
+     * @var array keep track of nonexisting contexts, to avoid exception tracking.
+     */
+    protected static $nonexistingcontexts = array();
+
     /**
      * Sets the browser session.
      *
@@ -88,15 +92,21 @@ class behat_context_helper {
     public static function get($classname) {
 
         $suitename = self::$environment->getSuite()->getName();
+        // If default suite, then get the default theme name.
+        if ($suitename == 'default') {
+            $suitename = theme_config::DEFAULT_THEME;
+        }
         $overridencontextname = 'behat_theme_'.$suitename.'_'.$classname;
 
-        // Check if overridden context class exists.
-        if ($suitename !== 'default') {
+        // If contexts has not been checked before and doesn't exist then just use core one.
+        if (!isset(self::$nonexistingcontexts[$overridencontextname])) {
             try {
                 $subcontext = self::$environment->getContext($overridencontextname);
+
                 return $subcontext;
             } catch (Behat\Behat\Context\Exception\ContextNotFoundException $e) {
                 // If context not found then it's not overridden.
+                self::$nonexistingcontexts[$overridencontextname] = 1;
             }
         }