diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index 3d1290cd2..3c4773054 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -91,7 +91,8 @@ template<typename T> struct functor_traits
   enum
   {
     Cost = 10,
-    PacketAccess = false
+    PacketAccess = false,
+    IsRepeatable = false
   };
 };