diff --git a/bin/template_parser.lemon b/bin/template_parser.lemon
index ff56e60..e50e71b 100644
--- a/bin/template_parser.lemon
+++ b/bin/template_parser.lemon
@@ -7,6 +7,7 @@
 	
 	#include <string>
 	#include <stdlib.h>
+	#include <cassert>
 
 	#include "template.h"