diff --git a/modules/reitit-malli/src/reitit/coercion/malli.cljc b/modules/reitit-malli/src/reitit/coercion/malli.cljc
index 89f2618f..1b596c60 100644
--- a/modules/reitit-malli/src/reitit/coercion/malli.cljc
+++ b/modules/reitit-malli/src/reitit/coercion/malli.cljc
@@ -16,15 +16,19 @@
 (def string-transformer
   (mt/transformer
     mt/strip-extra-keys-transformer
-    mt/string-transformer))
+    mt/string-transformer
+    mt/default-value-transformer))
 
 (def json-transformer
   (mt/transformer
     mt/strip-extra-keys-transformer
-    mt/json-transformer))
+    mt/json-transformer
+    mt/default-value-transformer))
 
 (def default-transformer
-  mt/strip-extra-keys-transformer)
+  (mt/transformer
+    mt/strip-extra-keys-transformer
+    mt/default-value-transformer))
 
 ;; TODO: are these needed?
 (defmulti coerce-response? identity :default ::default)
@@ -107,7 +111,7 @@
                   :response {:default default-transformer
                              :formats {"application/json" json-transformer}}}
    ;; set of keys to include in error messages
-   :error-keys #{:type :coercion :in #_:schema #_:value :errors :humanized #_:transformed}
+   :error-keys #{:type :coercion :in :schema :value :errors :humanized #_:transformed}
    ;; malli options
    :options nil})
 
diff --git a/test/cljc/reitit/ring_coercion_test.cljc b/test/cljc/reitit/ring_coercion_test.cljc
index 73b3d338..c4f69583 100644
--- a/test/cljc/reitit/ring_coercion_test.cljc
+++ b/test/cljc/reitit/ring_coercion_test.cljc
@@ -207,7 +207,7 @@
                       ["/plus/:e"
                        {:get {:parameters {:query [:map [:a {:optional true} int?]]
                                            :body [:map [:b int?]]
-                                           :form [:map [:c int?]]
+                                           :form [:map [:c [int? {:default 3}]]]
                                            :header [:map [:d int?]]
                                            :path [:map [:e int?]]}
                               :responses {200 {:body [:map [:total pos-int?]]}
@@ -230,6 +230,10 @@
           (is (= {:status 200
                   :body {:total 15}}
                  (app valid-request3)))
+          (testing "default values work"
+            (is (= {:status 200
+                    :body {:total 15}}
+                   (app (update valid-request3 :form-params dissoc :c)))))
           (is (= {:status 500
                   :body {:evil true}}
                  (app (assoc-in valid-request1 [:query-params "a"] "666")))))