diff --git a/tutorial/CMakeLists.txt b/tutorial/CMakeLists.txt
index 6cd45fc50..b8b1a4bf2 100644
--- a/tutorial/CMakeLists.txt
+++ b/tutorial/CMakeLists.txt
@@ -186,4 +186,5 @@ if(TUTORIALS_CHAPTER7)
   endif()
   add_subdirectory("710_SLIM")
   add_subdirectory("711_Subdivision")
+  add_subdirectory("712_DataSmoothing")
 endif()
diff --git a/tutorial/tutorial.html b/tutorial/tutorial.html
index de00746ea..e0514ec10 100644
--- a/tutorial/tutorial.html
+++ b/tutorial/tutorial.html
@@ -3638,7 +3638,7 @@ Hessian boundary conditions instead, which corresponds to the hessian energy
 with the matrix <code>QH = H'*(M2\H)</code>, where <code>H</code> is a finite element Hessian and
 <code>M2</code> is a stacked mass matrix. The matrices <code>H</code> and <code>QH</code> are implemented in
 libigl as <code>igl::hessian</code> and <code>igl::hessian_energy</code> respectively. An example
-of how to use the function is given in <a href="712_DataSmoothing/main.cpp">Example</a>.</p>
+of how to use the function is given in <a href="712_DataSmoothing/main.cpp">Example 712</a>.</p>
 
 <p>In the following image the differences between the Laplacian energy with
 zero Neumann boundary conditions and the Hessian energy can be clearly seen: