1 files changed, 3 insertions, 2 deletions
diff --git a/plugins/Events/Columns/EventCategory.php b/plugins/Events/Columns/EventCategory.php
index 7c6b5fd02a..731dd9615c 100644
--- a/plugins/Events/Columns/EventCategory.php
+++ b/plugins/Events/Columns/EventCategory.php
@@ -8,6 +8,7 @@
  */
 namespace Piwik\Plugins\Events\Columns;
 
+use Piwik\Exception\InvalidRequestParameterException;
 use Piwik\Piwik;
 use Piwik\Plugin\Dimension\ActionDimension;
 use Piwik\Plugins\Events\Segment;
@@ -44,13 +45,13 @@ class EventCategory extends ActionDimension
             return false;
         }
 
-        $eventCategory = $request->getParam('e_c');
+        $eventCategory = $action->getEventCategory();
         $eventCategory = trim($eventCategory);
 
         if (strlen($eventCategory) > 0) {
             return $eventCategory;
         }
 
-        return false;
+        throw new InvalidRequestParameterException('Param `e_c` must not be empty or filled with whitespaces');
     }
 }
 \ No newline at end of file