diff --git a/lib/mixins/element-mixin.html b/lib/mixins/element-mixin.html
index 33e7758cc0..677767d71f 100644
--- a/lib/mixins/element-mixin.html
+++ b/lib/mixins/element-mixin.html
@@ -398,11 +398,16 @@
 
       /**
        * Path matching the url from which the element was imported.
+       *
        * This path is used to resolve url's in template style cssText.
        * The `importPath` property is also set on element instances and can be
        * used to create bindings relative to the import path.
-       * Defaults to the path matching the url containing a `dom-module` element
-       * matching this element's static `is` property.
+       * For elements defined in ES modules, users should implement `importMeta`
+       * and this getter will return `import.meta.url`'s path. For elements
+       * defined in HTML imports, this getter will return the path to the
+       * document containing a `dom-module` element matching this element's
+       * static `is` property.
+       *
        * Note, this path should contain a trailing `/`.
        *
        * @return {string} The import path for this element class