diff --git a/src/NoteSeq.cpp b/src/NoteSeq.cpp
index 7e12ebf..e5a8e4a 100644
--- a/src/NoteSeq.cpp
+++ b/src/NoteSeq.cpp
@@ -1,4 +1,5 @@
 #include <string.h>
+#include <algorithm>
 #include "JWModules.hpp"
 #include "dsp/digital.hpp"