diff --git a/src/rempi/rempi_message_manager.h b/src/rempi/rempi_message_manager.h
index 5d4519b..4e17e9e 100644
--- a/src/rempi/rempi_message_manager.h
+++ b/src/rempi/rempi_message_manager.h
@@ -26,6 +26,7 @@
 
 #include <unordered_map>
 #include <list>
+#include <string>
 
 #include "mpi.h"