diff --git a/gtsam_extra.cmake.in b/gtsam_extra.cmake.in
index 8a9a13648..01ac00b37 100644
--- a/gtsam_extra.cmake.in
+++ b/gtsam_extra.cmake.in
@@ -9,5 +9,6 @@ set (GTSAM_USE_TBB @GTSAM_USE_TBB@)
 set (GTSAM_DEFAULT_ALLOCATOR @GTSAM_DEFAULT_ALLOCATOR@)
 
 if("@GTSAM_INSTALL_CYTHON_TOOLBOX@")
+  list(APPEND GTSAM_CYTHON_INSTALL_PATH "@GTSAM_CYTHON_INSTALL_PATH@")
   list(APPEND GTSAM_EIGENCY_INSTALL_PATH "@GTSAM_EIGENCY_INSTALL_PATH@")
 endif()