diff --git a/watchman/root/watchlist.cpp b/watchman/root/watchlist.cpp
index 5c0311ac507a..23218847d453 100644
--- a/watchman/root/watchlist.cpp
+++ b/watchman/root/watchlist.cpp
@@ -36,13 +36,6 @@ bool Root::removeFromWatched() {
   return false;
 }
 
-// Given a filename, walk the current set of watches.
-// If a watch is a prefix match for filename then we consider it to
-// be an enclosing watch and we'll return the root path and the relative
-// path to filename.
-// Returns NULL if there were no matches.
-// If multiple watches have the same prefix, it is undefined which one will
-// match.
 bool findEnclosingRoot(
     const w_string& fileName,
     w_string_piece& prefix,
diff --git a/watchman/root/watchlist.h b/watchman/root/watchlist.h
index 6927908a598e..38561ecb170c 100644
--- a/watchman/root/watchlist.h
+++ b/watchman/root/watchlist.h
@@ -22,6 +22,13 @@ extern std::atomic<long> live_roots;
 extern folly::Synchronized<std::unordered_map<w_string, std::shared_ptr<Root>>>
     watched_roots;
 
+// Given a filename, walk the current set of watches.
+// If a watch is a prefix match for filename then we consider it to
+// be an enclosing watch and we'll return the root path and the relative
+// path to filename.
+// Returns NULL if there were no matches.
+// If multiple watches have the same prefix, it is undefined which one will
+// match.
 bool findEnclosingRoot(
     const w_string& fileName,
     w_string_piece& prefix,