diff --git a/gtsam/basis/Chebyshev.h b/gtsam/basis/Chebyshev.h
index d16ccfaac..87599acdc 100644
--- a/gtsam/basis/Chebyshev.h
+++ b/gtsam/basis/Chebyshev.h
@@ -21,8 +21,6 @@
 #include <gtsam/base/Manifold.h>
 #include <gtsam/basis/Basis.h>
 
-#include <unsupported/Eigen/KroneckerProduct>
-
 namespace gtsam {
 
 /**