diff --git a/Utility/DirWatcher/FSEvents.hs b/Utility/DirWatcher/FSEvents.hs
index 94451b109d..d4e20e9249 100644
--- a/Utility/DirWatcher/FSEvents.hs
+++ b/Utility/DirWatcher/FSEvents.hs
@@ -20,7 +20,7 @@ watchDir dir ignored scanevents hooks = do
 	unlessM fileLevelEventsSupported $
 		giveup "Need at least OSX 10.7.0 for file-level FSEvents"
 	scan dir
-	eventStreamCreate [dir] 1.0 True True True dispatch
+	eventStreamCreate [fromOsPath dir] 1.0 True True True dispatch
   where
 	dispatch evt
 		| ignoredPath ignored (toOsPath (eventPath evt)) = noop