diff --git a/src/engine/instrument.h b/src/engine/instrument.h
index 3cf65b63c..8fac58e0f 100644
--- a/src/engine/instrument.h
+++ b/src/engine/instrument.h
@@ -22,6 +22,7 @@
 #include "safeWriter.h"
 #include "dataErrors.h"
 #include "../ta-utils.h"
+#include <vector>
 
 struct DivSong;