diff --git a/src/fsevents.ml b/src/backend.fsevents.ml
similarity index 100%
rename from src/fsevents.ml
rename to src/backend.fsevents.ml
diff --git a/src/fsevents.mli b/src/backend.fsevents.mli
similarity index 100%
rename from src/fsevents.mli
rename to src/backend.fsevents.mli
diff --git a/src/inotify.ml b/src/backend.inotify.ml
similarity index 100%
rename from src/inotify.ml
rename to src/backend.inotify.ml
diff --git a/src/inotify.mli b/src/backend.inotify.mli
similarity index 100%
rename from src/inotify.mli
rename to src/backend.inotify.mli
diff --git a/src/polling.ml b/src/backend.polling.ml
similarity index 100%
rename from src/polling.ml
rename to src/backend.polling.ml
diff --git a/src/polling.mli b/src/backend.polling.mli
similarity index 100%
rename from src/polling.mli
rename to src/backend.polling.mli
diff --git a/src/dune b/src/dune
index cbc7404..6fcb235 100644
--- a/src/dune
+++ b/src/dune
@@ -1,14 +1,13 @@
 (library
   (name        irmin_watcher)
-  (modules     core hook backend irmin_watcher)
   (public_name irmin-watcher)
   (c_names     realpath)
   (libraries   fmt lwt logs astring
      (select backend.ml from
-        (osx-cf.lwt osx-fsevents.lwt -> fsevents.ml)
-        (inotify.lwt                 -> inotify.ml)
-        (lwt.unix                    -> polling.ml))
+        (osx-cf.lwt osx-fsevents.lwt -> backend.fsevents.ml)
+        (inotify.lwt                 -> backend.inotify.ml)
+        (lwt.unix                    -> backend.polling.ml))
      (select backend.mli from
-        (osx-cf.lwt osx-fsevents.lwt -> fsevents.mli)
-        (inotify.lwt                 -> inotify.mli)
-        (lwt.unix                    -> polling.mli))))
+        (osx-cf.lwt osx-fsevents.lwt -> backend.fsevents.mli)
+        (inotify.lwt                 -> backend.inotify.mli)
+        (lwt.unix                    -> backend.polling.mli))))