diff --git a/src/shared/types/ReactPropTypeLocationNames.js b/src/shared/types/ReactPropTypeLocationNames.js
index 7ea35f0091..bf573e943e 100644
--- a/src/shared/types/ReactPropTypeLocationNames.js
+++ b/src/shared/types/ReactPropTypeLocationNames.js
@@ -6,6 +6,7 @@
  * LICENSE file in the root directory of this source tree. An additional grant
  * of patent rights can be found in the PATENTS file in the same directory.
  *
+ * @flow
  * @providesModule ReactPropTypeLocationNames
  */