diff --git a/src/monger/convertion.clj b/src/monger/convertion.clj
index 454b1c1..ed662e4 100644
--- a/src/monger/convertion.clj
+++ b/src/monger/convertion.clj
@@ -1,6 +1,7 @@
 (ns monger.convertion
   (:import (com.mongodb DBObject BasicDBObject)
-           (clojure.lang IPersistentMap Keyword)))
+           (clojure.lang IPersistentMap Keyword)
+           (java.util List Map)))
 
 (defprotocol ConvertToDBObject
   (to-db-object [input] "Converts given piece of Clojure data to BasicDBObject MongoDB Java driver uses"))
@@ -15,14 +16,18 @@
     input)
 
   Keyword
-  (to-db-object [#^Keyword o] (.getName o))
-  
+  (to-db-object [#^Keyword input] (.getName input))
+
   IPersistentMap
   (to-db-object [#^IPersistentMap input]
     (let [o (BasicDBObject.)]
       (doseq [[k v] input]
         (.put o (to-db-object k) (to-db-object v)))
-      o)))
+      o))
+
+  List
+  (to-db-object [#^List input] (map to-db-object input)))
+  
 
 
 
diff --git a/test/monger/test/convertion.clj b/test/monger/test/convertion.clj
index 5646649..628fa38 100644
--- a/test/monger/test/convertion.clj
+++ b/test/monger/test/convertion.clj
@@ -29,3 +29,9 @@
     (is (= 1 (.get output "int")))
     (is (= "Mongo" (.get output "string")))
     (is (= 22.23 (.get output "float")))))
+
+
+(deftest convert-nested-map-to-dbobject
+  (let [input  { :int 1, :string "Mongo", :float 22.23, :map { :int 10, :string "Clojure", :float 11.9, :list '(1 "a" :b) } }
+        output (monger.convertion/to-db-object input)]
+    (is (= 10 (.get (.get output "map") "int")))))