diff --git a/include/record3d/Record3DStructs.h b/include/record3d/Record3DStructs.h
index 2982382..703ee21 100644
--- a/include/record3d/Record3DStructs.h
+++ b/include/record3d/Record3DStructs.h
@@ -2,6 +2,7 @@
 #define CPP_RECORD3DSTRUCTS_H
 
 #include <cstring>
+#include <string>
 
 namespace Record3D
 {