diff --git a/Eigen/src/Core/util/Constants.h b/Eigen/src/Core/util/Constants.h
index 37f18f2b4..2c7a444b7 100644
--- a/Eigen/src/Core/util/Constants.h
+++ b/Eigen/src/Core/util/Constants.h
@@ -200,8 +200,6 @@ enum {
   Aligned=1 
 };
 
-enum { ConditionalJumpCost = 5 };
-
 /** \ingroup enums
  * Enum used by DenseBase::corner() in Eigen2 compatibility mode. */
 // FIXME after the corner() API change, this was not needed anymore, except by AlignedBox
@@ -223,8 +221,6 @@ enum DirectionType {
   BothDirections 
 };
 
-enum ProductEvaluationMode { NormalProduct, CacheFriendlyProduct };
-
 /** \internal \ingroup enums
   * Enum to specify how to traverse the entries of a matrix. */
 enum {