diff --git a/packages/babel-preset-env/src/polyfills/corejs3/entry-plugin.js b/packages/babel-preset-env/src/polyfills/corejs3/entry-plugin.js
index caa8de4cff31..1ad1aa996269 100644
--- a/packages/babel-preset-env/src/polyfills/corejs3/entry-plugin.js
+++ b/packages/babel-preset-env/src/polyfills/corejs3/entry-plugin.js
@@ -56,7 +56,8 @@ export default function (
       modules.length === 1 &&
       polyfills.has(modules[0]) &&
       available.has(modules[0]) &&
-      getModulePath(modules[0]) === source
+      (getModulePath(modules[0]) === source ||
+        getModulePath(modules[0]) === `${source}.js`)
     ) {
       return false;
     }
diff --git a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-chrome-71/output.mjs b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-chrome-71/output.mjs
index 397c25c08b26..55d6e9dbd5c4 100644
--- a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-chrome-71/output.mjs
+++ b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-chrome-71/output.mjs
@@ -1,2 +1,2 @@
-import "core-js/modules/es.object.from-entries.js";
-import "core-js/modules/esnext.string.replace-all.js";
+import 'core-js/modules/es.object.from-entries';
+import 'core-js/modules/esnext.string.replace-all';
diff --git a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/input.mjs b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/input.mjs
new file mode 100644
index 000000000000..48ce95b3c86f
--- /dev/null
+++ b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/input.mjs
@@ -0,0 +1,3 @@
+import 'core-js/modules/es.symbol.js';
+import 'core-js/modules/es.object.from-entries.js';
+import 'core-js/modules/esnext.string.replace-all.js';
diff --git a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/options.json b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/options.json
new file mode 100644
index 000000000000..fe930890ee20
--- /dev/null
+++ b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/options.json
@@ -0,0 +1,12 @@
+{
+  "presets": [
+    [
+      "../../../../lib",
+      {
+        "modules": false,
+        "useBuiltIns": "entry",
+        "corejs": 3
+      }
+    ]
+  ]
+}
diff --git a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/output.mjs b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/output.mjs
new file mode 100644
index 000000000000..48ce95b3c86f
--- /dev/null
+++ b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules-with-extensions/output.mjs
@@ -0,0 +1,3 @@
+import 'core-js/modules/es.symbol.js';
+import 'core-js/modules/es.object.from-entries.js';
+import 'core-js/modules/esnext.string.replace-all.js';
diff --git a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules/output.mjs b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules/output.mjs
index 332d84698bac..e761a4ac12c5 100644
--- a/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules/output.mjs
+++ b/packages/babel-preset-env/test/fixtures/corejs3/entry-entries-modules/output.mjs
@@ -1,3 +1,3 @@
-import "core-js/modules/es.symbol.js";
-import "core-js/modules/es.object.from-entries.js";
-import "core-js/modules/esnext.string.replace-all.js";
+import 'core-js/modules/es.symbol';
+import 'core-js/modules/es.object.from-entries';
+import 'core-js/modules/esnext.string.replace-all';