diff --git a/jest/hasteImpl.js b/jest/hasteImpl.js
index 2632a105aa5..06df409167a 100644
--- a/jest/hasteImpl.js
+++ b/jest/hasteImpl.js
@@ -51,7 +51,7 @@ const pluginRoots /*: Array<
 const pluginNameReducers /*: Array<
   [RegExp, string],
 > */ = plugins.haste.platforms.map(name => [
-  new RegExp(`^(.*)\.(${name})$`),
+  new RegExp(`^(.*)\\.(${name})$`),
   '$1',
 ]);