diff --git a/src/main/clojure/cljs/externs.clj b/src/main/clojure/cljs/externs.clj
index e940461e7..ddccfdc4e 100644
--- a/src/main/clojure/cljs/externs.clj
+++ b/src/main/clojure/cljs/externs.clj
@@ -73,7 +73,9 @@
             {:tag (get-tag ty)}
             (if (or (.isConstructor info) (.isInterface info))
               (let [qname (symbol (.. node getFirstChild getQualifiedName))]
-                (cond-> {:tag 'Function}
+                (cond-> (merge {:tag 'Function}
+                          (when (.hasBaseType info)
+                            {:super (get-tag (.getBaseType info))}))
                   (.isConstructor info) (merge {:ctor qname})
                   (.isInterface info) (merge {:iface qname})))
               (if (or (.hasReturnType info)
diff --git a/src/test/clojure/cljs/externs_parsing_tests.clj b/src/test/clojure/cljs/externs_parsing_tests.clj
index 7bcc44539..c2b199cf1 100644
--- a/src/test/clojure/cljs/externs_parsing_tests.clj
+++ b/src/test/clojure/cljs/externs_parsing_tests.clj
@@ -10,7 +10,8 @@
   (:require [cljs.closure :as closure]
             [cljs.externs :as externs]
             [clojure.java.io :as io]
-            [clojure.test :as test :refer [deftest is]]))
+            [clojure.test :as test :refer [deftest is]])
+  (:import [com.google.javascript.jscomp CommandLineRunner]))
 
 (deftest cljs-3121
   (let [externs (externs/parse-externs
@@ -34,6 +35,16 @@
     (is (= 'any (get-in ns [:defs 'get :ret-tag])))
     (is (= 'array (get-in ns [:defs 'getKeys :ret-tag])))))
 
+(deftest test-parse-super
+  (let [info (->
+               (filter
+                 (fn [s]
+                   (= "externs.zip//w3c_dom2.js" (.getName s)))
+                 (CommandLineRunner/getDefaultExterns))
+               first externs/parse-externs externs/index-externs
+               (find 'HTMLDocument) first meta)]
+    (is (= 'Document (:super info)))))
+
 (comment
 
   (externs/parse-externs