diff --git a/src/native-watcher-registry.js b/src/native-watcher-registry.js
index 0fffe4f77..798ff0619 100644
--- a/src/native-watcher-registry.js
+++ b/src/native-watcher-registry.js
@@ -436,7 +436,7 @@ class NativeWatcherRegistry {
   // registry.
   //
   // Returns a {String} showing the tree structure.
-  print() {
+  print () {
     return this.tree.print()
   }
 }