diff --git a/experimental/babel-preset-env/README.md b/experimental/babel-preset-env/README.md
index 794630c861..d34193086e 100644
--- a/experimental/babel-preset-env/README.md
+++ b/experimental/babel-preset-env/README.md
@@ -174,7 +174,7 @@ This option is useful for "blacklisting" a transform like `transform-regenerator
 
 ### `useBuiltIns`
 
-`boolean`, defaults to `true`.
+`boolean` | `"entry"`, defaults to `true`.
 
 A way to apply `babel-preset-env` for polyfills (via `babel-polyfill`).
 
diff --git a/experimental/babel-preset-env/src/use-built-ins-plugin.js b/experimental/babel-preset-env/src/use-built-ins-plugin.js
index a764d44d8f..33e5c478ae 100644
--- a/experimental/babel-preset-env/src/use-built-ins-plugin.js
+++ b/experimental/babel-preset-env/src/use-built-ins-plugin.js
@@ -5,10 +5,10 @@ function isPolyfillSource(value) {
 }
 
 function warnOnInstanceMethod(state, details) {
-  state.opts.debug &&
-    console.warn(
-      `Adding a polyfill: An instance method may have been used: ${details}`,
-    );
+  // state.opts.debug &&
+  //   console.warn(
+  //     `Adding a polyfill: An instance method may have been used: ${details}`,
+  //   );
 }
 
 function has(obj, key) {
@@ -68,8 +68,8 @@ export default function({ types: t }) {
       ) {
         console.warn(
           `
-When setting 'useBuiltIns: true', polyfills are automatically imported when needed.
-Please remove the call or use 'useBuiltIns: "entry"' instead.
+When setting "useBuiltIns: true", polyfills are automatically imported when needed.
+Please remove the "import 'babel-polyfill'" call or use "useBuiltIns: 'entry'" instead.
 `,
         );
         path.remove();
@@ -90,8 +90,8 @@ to the "transform-polyfill-require" plugin
           if (isRequire(bodyPath)) {
             console.warn(
               `
-When setting 'useBuiltIns: true', polyfills are automatically imported when needed.
-Please remove the call or use 'useBuiltIns: "entry"' instead.
+When setting "useBuiltIns: true", polyfills are automatically imported when needed.
+Please remove the "require('babel-polyfill')" call or use "useBuiltIns: 'entry'" instead.
 `,
             );
             path.remove();