diff --git a/src/core/dictionary.cpp b/src/core/dictionary.cpp
index eaa9c8b..69c9272 100644
--- a/src/core/dictionary.cpp
+++ b/src/core/dictionary.cpp
@@ -1,6 +1,7 @@
 
 #include <iostream>
 #include <cstdio>
+#include <iterator>
 #include <algorithm>
 #include "../string.h"
 #include "dictionary.h"