diff --git a/Src/BlockFile.cpp b/Src/BlockFile.cpp
index 24b5c4e..7facd37 100644
--- a/Src/BlockFile.cpp
+++ b/Src/BlockFile.cpp
@@ -28,6 +28,7 @@
 
 #include <cstdio>
 #include <cstring>
+#include <string>
 #include "Supermodel.h"