diff --git a/src/script.h b/src/script.h
index 9d94e3f5c..b88083881 100644
--- a/src/script.h
+++ b/src/script.h
@@ -10,6 +10,8 @@
 #include <string>
 #include <vector>
 
+#include <boost/foreach.hpp>
+
 class CTransaction;
 
 enum