diff --git a/src/middlewares/response_camelizer.js b/src/middlewares/response_camelizer.js
new file mode 100644
index 0000000..631b5b1
--- /dev/null
+++ b/src/middlewares/response_camelizer.js
@@ -0,0 +1,12 @@
+// @flow
+import { camelizeKeys } from 'humps';
+import * as ActionTypes from '../actions/action_types';
+
+export default (store: any) => (next: any) => (action: any) => {
+    for (const key in ActionTypes) {
+        if ((ActionTypes[key] === action.type) && action.type.match(/.*(_OK|_NG)$/)) {
+            action.payload = camelizeKeys(action.payload);
+        }
+    }
+    next(action);
+};
diff --git a/src/store/configure_store.js b/src/store/configure_store.js
index f2e5efd..c4c8f16 100644
--- a/src/store/configure_store.js
+++ b/src/store/configure_store.js
@@ -6,6 +6,7 @@ import { routerMiddleware } from 'react-router-redux';
 import { browserHistory } from 'react-router';
 import rootSaga from '../sagas/index';
 import rootReducer from '../reducers';
+import responseCamelizer from '../middleware/response_camelizer';
 
 const routing = routerMiddleware(browserHistory);
 const sagaMiddleware = createSagaMiddleware();
@@ -13,6 +14,7 @@ const enhancer = compose(
     applyMiddleware(
         routing,
         sagaMiddleware,
+        responseCamelizer,
         createLogger(),
     ),
 );