diff --git a/src/Storage.h b/src/Storage.h
index 0bf89a5..0fdfc05 100644
--- a/src/Storage.h
+++ b/src/Storage.h
@@ -2,6 +2,7 @@
 #define __GSM_STORAGE_H__
 
 #include "Arduino.h"
+#include <vector>
 
 typedef enum {
     DIR_TYPE = 1,