diff --git a/src/internalHelpers/_endsWith.js b/src/internalHelpers/_endsWith.js
index <HASH>..<HASH> 100644
--- a/src/internalHelpers/_endsWith.js
+++ b/src/internalHelpers/_endsWith.js
@@ -1,3 +1,5 @@
+// @flow
+
 /**
  * Check if a string ends with something
  */
chore(internal): add @flow to endsWith