diff --git a/src/version.js b/src/version.js
index 3b889e2d6..3a691d7ce 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1,7 +1,10 @@
 import React from 'react';
 
 export const VERSION = React.version;
+
+const [major, minor] = VERSION.split('.');
+
 export const REACT013 = VERSION.slice(0, 4) === '0.13';
 export const REACT014 = VERSION.slice(0, 4) === '0.14';
-export const REACT15 = VERSION.slice(0, 3) === '15.';
-export const REACT155 = VERSION.slice(0, 4) === '15.5';
+export const REACT15 = major === '15';
+export const REACT155 = REACT15 && +minor >= 5;