diff --git a/core/event.cpp b/core/event.cpp
index 08774823f..6ea384d7b 100644
--- a/core/event.cpp
+++ b/core/event.cpp
@@ -4,6 +4,8 @@
 #include "eventtype.h"
 #include "subsurface-string.h"
 
+#include <tuple>
+
 event::event() : type(SAMPLE_EVENT_NONE), flags(0), value(0),
 	divemode(OC), hidden(false)
 {