diff --git a/operations/external/exr-save.cc b/operations/external/exr-save.cc
index 1e8c09d96..87abed511 100644
--- a/operations/external/exr-save.cc
+++ b/operations/external/exr-save.cc
@@ -45,6 +45,7 @@ extern "C" {
 #include <ImfChromaticities.h>
 #include <ImfStandardAttributes.h>
 #include <ImfArray.h>
+#include <ImfFrameBuffer.h>
 #include "ImathRandom.h"