diff --git a/CHANGES.md b/CHANGES.md
index ec1fe5574fd7..81b7b81b1543 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,6 +11,9 @@
 - Improved `MaterialProperty` JSDoc and TypeScript type definitions, which were missing the ability to take primitive types in addition to Property instances in their constructor.
 - Fixed `EllipsoidGeodesic` JSDoc and TypeScript type definitions which incorrectly listed `result` as required.
 - Fixed a bug with handling of PixelFormat's flipY. [#8893](https://github.com/CesiumGS/cesium/pull/8893)
+
+* Fixed JSDoc and TypeScript for `buildModuleUrl`, which was accidentally excluded from the official CesiumJS API.
+
 - Fixed JSDoc and TypeScript type definitions for all `ImageryProvider` types, which were missing `defaultNightAlpha` and `defaultDayAlpha` properties.
 - Fixed JSDoc and TypeScript type definitions for `Viewer` options parameter, which was incorrectly listed as required.
 - Fixed a memory leak where some 3D Tiles requests were being unintentionally retained after the requests were cancelled. [#8843](https://github.com/CesiumGS/cesium/pull/8843)
diff --git a/Source/Core/buildModuleUrl.js b/Source/Core/buildModuleUrl.js
index b79c07069ca8..2991ddc057ce 100644
--- a/Source/Core/buildModuleUrl.js
+++ b/Source/Core/buildModuleUrl.js
@@ -90,13 +90,20 @@ function buildModuleUrlFromBaseUrl(moduleID) {
 var implementation;
 
 /**
- * Given a non-relative moduleID, returns an absolute URL to the file represented by that module ID,
- * using, in order of preference, require.toUrl, the value of a global CESIUM_BASE_URL, or
- * the base URL of the Cesium.js script.
+ * Given a relative URL under the Cesium base URL, returns an absolute URL.
+ * @function
  *
- * @private
+ * @param {String} relativeUrl The relative path.
+ *
+ * @example
+ * var viewer = new Cesium.Viewer("cesiumContainer", {
+ *   imageryProvider: new Cesium.TileMapServiceImageryProvider({
+ *   url: Cesium.buildModuleUrl("Assets/Textures/NaturalEarthII"),
+ *   }),
+ *   baseLayerPicker: false,
+ * });
  */
-function buildModuleUrl(moduleID) {
+function buildModuleUrl(relativeUrl) {
   if (!defined(implementation)) {
     //select implementation
     if (
@@ -111,7 +118,7 @@ function buildModuleUrl(moduleID) {
     }
   }
 
-  var url = implementation(moduleID);
+  var url = implementation(relativeUrl);
   return url;
 }