diff --git a/src/re_frame/core.cljs b/src/re_frame/core.cljs
index 156c8ad..1048529 100644
--- a/src/re_frame/core.cljs
+++ b/src/re_frame/core.cljs
@@ -21,7 +21,7 @@
 (def path        middleware/path)
 (def validate    middleware/validate)
 (def log-events  middleware/log-events)
-(def apply-event middleware/apply-event)
+(def trim-v      middleware/trim-v)
 
 
 
@@ -32,4 +32,4 @@
   ([id handler]
     (register-handler id pure handler))
   ([id middleware handler]
-    (register-handler id (comp pure middleware) handler)))
+    (register-handler id [pure middleware] handler)))
diff --git a/src/re_frame/handlers.cljs b/src/re_frame/handlers.cljs
index 2877ea9..f9b662c 100644
--- a/src/re_frame/handlers.cljs
+++ b/src/re_frame/handlers.cljs
@@ -19,7 +19,11 @@
     (swap! id->fn assoc event-id handler-fn))
 
   ([event-id middleware handler-fn]
-    (register event-id (middleware handler-fn))))
+    (let  [mware  (if (vector? middleware)
+                    (apply comp middleware)   ;; compose the vector of middleware
+                    middleware)
+           hander-fn (mware handler-fn)]
+      (register event-id hander-fn))))
 
 
 ;; -- The Event Conveyor Belt  --------------------------------------------------------------------