diff --git a/3rdparty/openexr/Imath/ImathQuat.h b/3rdparty/openexr/Imath/ImathQuat.h
index e95e356d59..e01d10b7c3 100644
--- a/3rdparty/openexr/Imath/ImathQuat.h
+++ b/3rdparty/openexr/Imath/ImathQuat.h
@@ -60,6 +60,7 @@
 #include "ImathNamespace.h"
 
 #include <iostream>
+#include <algorithm>
 
 IMATH_INTERNAL_NAMESPACE_HEADER_ENTER