diff --git a/event_groups.c b/event_groups.c
index 0ee7990..4a12430 100644
--- a/event_groups.c
+++ b/event_groups.c
@@ -625,6 +625,8 @@
 
 void vEventGroupDelete( EventGroupHandle_t xEventGroup )
 {
+    configASSERT( xEventGroup );
+
     EventGroup_t * pxEventBits = xEventGroup;
     const List_t * pxTasksWaitingForBits = &( pxEventBits->xTasksWaitingForBits );