diff --git a/src/shared/types/ReactPropTypeLocations.js b/src/shared/types/ReactPropTypeLocations.js
index 3ed5a649fd..ade51f6d5d 100644
--- a/src/shared/types/ReactPropTypeLocations.js
+++ b/src/shared/types/ReactPropTypeLocations.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 ReactPropTypeLocations
  */