diff --git a/libraries/animation/src/AnimVariant.h b/libraries/animation/src/AnimVariant.h
index b30a04e6bd..0a91c82d80 100644
--- a/libraries/animation/src/AnimVariant.h
+++ b/libraries/animation/src/AnimVariant.h
@@ -18,6 +18,7 @@
 #include <set>
 #include <QScriptValue>
 #include "AnimationLogging.h"
+#include "StreamUtils.h"
 
 class AnimVariant {
 public: