1 files changed, 2 insertions, 0 deletions
diff --git a/src/types.h b/src/types.h
index f1b5f640..ebcfb838 100644
--- a/src/types.h
+++ b/src/types.h
@@ -24,6 +24,8 @@
 #ifndef LIBDCP_TYPES_H
 #define LIBDCP_TYPES_H
 
+#include <string>
+
 namespace libdcp
 {