diff --git a/README.md b/README.md
index 84b0056d..85d2fe73 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,8 @@ _**default:** `2019.2.1f11`_
 
 Platform that the build should target.
 
+Must be one of the [allowed values](https://docs.unity3d.com/ScriptReference/BuildTarget.html) listed in the Unity scripting manual.
+
 _**required:** `true`_
 
 #### buildName
diff --git a/src/model/image-tag.js b/src/model/image-tag.js
index d7d516bd..cab814f8 100644
--- a/src/model/image-tag.js
+++ b/src/model/image-tag.js
@@ -44,7 +44,7 @@ export default class ImageTag {
   static get targetPlatformToBuilderPlatformMap() {
     const { generic, webgl, mac, windows, android, ios } = ImageTag.builderPlatforms;
 
-    // @see: https://github.com/Unity-Technologies/UnityCsReference/blob/9034442437e6b5efe28c51d02e978a96a3ce5439/Editor/Mono/BuildTarget.cs
+    // @see: https://docs.unity3d.com/ScriptReference/BuildTarget.html
     return {
       Test: generic,
       WebGL: webgl,