diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
index d57afc018833..000360432f2b 100644
--- a/packages/babel-helpers/src/helpers.js
+++ b/packages/babel-helpers/src/helpers.js
@@ -8,7 +8,11 @@ export default helpers;
 helpers.typeof = template(`
   (typeof Symbol === "function" && typeof Symbol.iterator === "symbol")
     ? function (obj) { return typeof obj; }
-    : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
+    : function (obj) {
+        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype
+          ? "symbol"
+          : typeof obj;
+      };
 `);
 
 helpers.jsx = template(`
diff --git a/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/shadow/expected.js b/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/shadow/expected.js
index 0e6479c44558..2980b2f49cf0 100644
--- a/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/shadow/expected.js
+++ b/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/shadow/expected.js
@@ -1,4 +1,4 @@
-var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
 
 var _Symbol = foo();
 typeof s === "undefined" ? "undefined" : _typeof(s);
diff --git a/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/typeof/exec.js b/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/typeof/exec.js
index 0c53760815a1..d89051afe7db 100644
--- a/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/typeof/exec.js
+++ b/packages/babel-plugin-transform-es2015-typeof-symbol/test/fixtures/symbols/typeof/exec.js
@@ -1,3 +1,4 @@
 var s = Symbol("s");
 assert.equal(typeof s, "symbol");
 assert.ok(typeof s === "symbol");
+assert.ok(typeof Symbol.prototype === 'object', "`typeof Symbol.prototype` should be 'object'");