diff --git a/modules/reitit-middleware/src/reitit/ring/middleware/alpha/muuntaja.cljc b/modules/reitit-middleware/src/reitit/ring/middleware/alpha/muuntaja.cljc
index b45ba1ae..3cafdcd4 100644
--- a/modules/reitit-middleware/src/reitit/ring/middleware/alpha/muuntaja.cljc
+++ b/modules/reitit-middleware/src/reitit/ring/middleware/alpha/muuntaja.cljc
@@ -12,6 +12,6 @@
                  (if options
                    (let [m (m/create options)]
                      {:data {:swagger {:produces (m/encodes m)
-                                       :consumes (m/encodes m)}}
+                                       :consumes (m/decodes m)}}
                       :wrap (fn [handler]
                               (muuntaja.middleware/wrap-format handler m))}))))}))
diff --git a/modules/reitit-swagger/src/reitit/swagger.cljc b/modules/reitit-swagger/src/reitit/swagger.cljc
index a5e6511d..dc2eca78 100644
--- a/modules/reitit-swagger/src/reitit/swagger.cljc
+++ b/modules/reitit-swagger/src/reitit/swagger.cljc
@@ -81,10 +81,11 @@
                        (merge {:swagger "2.0"
                                :x-id ids}))
           accept-route #(-> % second :swagger :id (or ::default) ->set (set/intersection ids) seq)
-          transform-endpoint (fn [[method {{:keys [coercion no-doc swagger] :as data} :data}]]
+          transform-endpoint (fn [[method {{:keys [coercion no-doc swagger] :as data} :data middleware :middleware}]]
                                (if (and data (not no-doc))
                                  [method
                                   (meta-merge
+                                    (apply meta-merge (keep (comp :swagger :data) middleware))
                                     (if coercion
                                       (coercion/-get-apidocs coercion :swagger data))
                                     (select-keys data [:tags :summary :description])
diff --git a/test/clj/reitit/ring/middleware/muuntaja_test.clj b/test/clj/reitit/ring/middleware/muuntaja_test.clj
index 521da94c..ecda573d 100644
--- a/test/clj/reitit/ring/middleware/muuntaja_test.clj
+++ b/test/clj/reitit/ring/middleware/muuntaja_test.clj
@@ -2,7 +2,9 @@
   (:require [clojure.test :refer [deftest testing is]]
             [reitit.ring :as ring]
             [reitit.ring.middleware.alpha.muuntaja :as muuntaja]
-            [muuntaja.core :as m]))
+            [muuntaja.core :as m]
+            [reitit.swagger :as swagger]
+            [reitit.core :as r]))
 
 (deftest muuntaja-test
   (let [data {:kikka "kukka"}
@@ -15,4 +17,68 @@
                      :body
                      (m/decode m/instance "application/json"))))))
 
-;; TODO: test swagger!
+(deftest muuntaja-swagger-test
+  (let [with-defaults m/instance
+        no-edn-decode (m/create (-> m/default-options (update-in [:formats "application/edn"] dissoc :decoder)))
+        just-edn (m/create (-> m/default-options (m/select-formats ["application/edn"])))
+        app (ring/ring-handler
+              (ring/router
+                [["/defaults"
+                  {:get identity}]
+                 ["/explicit-defaults"
+                  {:muuntaja with-defaults
+                   :get identity}]
+                 ["/no-edn-decode"
+                  {:muuntaja no-edn-decode
+                   :get identity}]
+                 ["/just-edn"
+                  {:muuntaja just-edn
+                   :get identity}]
+                 ["/swagger.json"
+                  {:get {:no-doc true
+                         :handler (swagger/create-swagger-handler)}}]]
+                {:data {:middleware [(muuntaja/create-format-middleware)]}}))
+        spec (fn [path]
+               (let [path (keyword path)]
+                 (-> {:request-method :get :uri "/swagger.json"}
+                     (app) :body
+                     (->> (m/decode m/instance "application/json"))
+                     :paths path :get)))
+        produces (comp set :produces spec)
+        consumes (comp set :consumes spec)]
+
+    (testing "with defaults"
+      (let [path "/defaults"]
+        (is (= #{"application/json"
+                 "application/transit+msgpack"
+                 "application/transit+json"
+                 "application/edn"}
+               (produces path)
+               (consumes path)))))
+
+    (testing "with explicit muuntaja defaults"
+      (let [path "/explicit-defaults"]
+        (is (= #{"application/json"
+                 "application/transit+msgpack"
+                 "application/transit+json"
+                 "application/edn"}
+               (produces path)
+               (consumes path)))))
+
+    (testing "without edn decode"
+      (let [path "/no-edn-decode"]
+        (is (= #{"application/json"
+                 "application/transit+msgpack"
+                 "application/transit+json"
+                 "application/edn"}
+               (produces path)))
+        (is (= #{"application/json"
+                 "application/transit+msgpack"
+                 "application/transit+json"}
+               (consumes path)))))
+
+    (testing "just edn"
+      (let [path "/just-edn"]
+        (is (= #{"application/edn"}
+               (produces path)
+               (consumes path)))))))
diff --git a/test/cljc/reitit/swagger_test.clj b/test/cljc/reitit/swagger_test.clj
index 7c563ec2..b29b9305 100644
--- a/test/cljc/reitit/swagger_test.clj
+++ b/test/cljc/reitit/swagger_test.clj
@@ -180,5 +180,5 @@
                          :handler (swagger/create-swagger-handler)}}]]))]
     (is (= ["/ping"] (spec-paths app "/swagger.json")))
     (is (= #{::swagger/default}
-          (-> {:request-method :get :uri "/swagger.json"}
-              (app) :body :x-id)))))
+           (-> {:request-method :get :uri "/swagger.json"}
+               (app) :body :x-id)))))