diff --git a/books/RayTracingInOneWeekend.html b/books/RayTracingInOneWeekend.html
index 0572af48..388920d4 100644
--- a/books/RayTracingInOneWeekend.html
+++ b/books/RayTracingInOneWeekend.html
@@ -2289,7 +2289,7 @@
             return -on_unit_sphere;
     }
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-    [Listing [random-in-hemisphere]: <kbd>[vec3.h]</kbd> The random_in_hemisphere() function]
+    [Listing [random-in-hemisphere]: <kbd>[vec3.h]</kbd> The random_on_hemisphere() function]
 
 </div>
 
diff --git a/books/RayTracingTheRestOfYourLife.html b/books/RayTracingTheRestOfYourLife.html
index 4a4f4921..30e9d2c4 100644
--- a/books/RayTracingTheRestOfYourLife.html
+++ b/books/RayTracingTheRestOfYourLife.html
@@ -1819,7 +1819,7 @@
         bool scatter(const ray& r_in, const hit_record& rec, color& attenuation, ray& scattered)
         const override {
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++ highlight
-            auto scatter_direction = random_in_hemisphere(rec.normal);
+            auto scatter_direction = random_on_hemisphere(rec.normal);
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++
 
             // Catch degenerate scatter direction