diff --git a/src/taoensso/timbre/appenders/3rd_party/rotor.clj b/src/taoensso/timbre/appenders/3rd_party/rotor.clj
index 51654c6..284d70a 100644
--- a/src/taoensso/timbre/appenders/3rd_party/rotor.clj
+++ b/src/taoensso/timbre/appenders/3rd_party/rotor.clj
@@ -4,8 +4,6 @@
             [taoensso.timbre :as timbre])
   (:import  [java.io File FilenameFilter]))
 
-;; TODO Test port to Timbre v4
-
 (defn- ^FilenameFilter file-filter
   "Returns a Java FilenameFilter instance which only matches
   files with the given `basename`."
diff --git a/test/taoensso/timbre/appenders/3rd_party/rotor_test.clj b/test/taoensso/timbre/appenders/3rd_party/rotor_test.clj
new file mode 100644
index 0000000..beb1ab0
--- /dev/null
+++ b/test/taoensso/timbre/appenders/3rd_party/rotor_test.clj
@@ -0,0 +1,29 @@
+(ns taoensso.timbre.appenders.3rd-party.rotor-test
+  (:require
+    [clojure.test :refer :all]
+    [clojure.java.io :as io]
+    [taoensso.timbre :as timbre]
+            [taoensso.timbre.appenders.3rd-party.rotor :as rotor]))
+
+(deftest rotor-test
+  []
+  (let [logfile "rotor-test.log"
+        n-logs 5]
+    (timbre/merge-config!
+      {:appenders {:rotor (rotor/rotor-appender
+                            {:path logfile
+                             :max-size 200
+                             :backlog n-logs})}})
+    (doseq [i (range 100)]
+      (timbre/info "testing..."))
+
+    (let [f (io/file logfile)]
+      (is (.exists f))
+      (.delete f))
+
+    (doseq [i (range 1 (inc n-logs))]
+      (let [f (io/file (str logfile ".00" i))]
+        (is (.exists f))
+        (.delete f)))))
+
+