diff --git a/api/WebGL2RenderingContext.json b/api/WebGL2RenderingContext.json
index 88f7a558e95c66..27d76d10419e92 100644
--- a/api/WebGL2RenderingContext.json
+++ b/api/WebGL2RenderingContext.json
@@ -6293,6 +6293,7 @@
       },
       "lineWidth": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/lineWidth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
           "tags": [
             "web-features:webgl2"