diff --git a/Kernel_23/doc/Kernel_23/Concepts/Kernel.h b/Kernel_23/doc/Kernel_23/Concepts/Kernel.h
index 1ca478d6d3c..18ccfad04ca 100644
--- a/Kernel_23/doc/Kernel_23/Concepts/Kernel.h
+++ b/Kernel_23/doc/Kernel_23/Concepts/Kernel.h
@@ -1338,6 +1338,11 @@ public:
   */
   typedef unspecified_type Compute_power_product_3;
 
+  /*!
+    a model of `Kernel::ComputePowerDistanceToPowerSphere_3`
+  */
+  typedef unspecified_type Compute_power_distance_to_power_sphere_3;
+
   /*!
     a model of `Kernel::ComputeSquaredRadiusSmallestOrthogonalSphere_3`
   */