diff --git a/src/bootstrap.js b/src/bootstrap.js
index 9ef96bf..bd0283d 100644
--- a/src/bootstrap.js
+++ b/src/bootstrap.js
@@ -5,12 +5,14 @@ import configureStore from './configureStore'
 export const BOOT = 'redux-boot/BOOT'
 
 export default function boot(initialState = {}, modules = []) {
-  const {reducers, middlewares, enhancers} = processModules(modules)
+  const {reducers, middlewares, enhancers, initialState: modulesInitialState} = processModules(modules)
 
-  let store = configureStore(initialState, reducers, middlewares, enhancers)
+  const state = {...initialState, ...modulesInitialState}
+
+  let store = configureStore(state, reducers, middlewares, enhancers)
 
   return store
-    .dispatch(bootAction(initialState))
+    .dispatch(bootAction(state))
     .then(action => {
       return {
         action,
diff --git a/src/processModules.js b/src/processModules.js
index f213284..b576fd5 100644
--- a/src/processModules.js
+++ b/src/processModules.js
@@ -23,10 +23,15 @@ export default function processModules(modules) {
     ))
     .map(module => module.enhancer)
 
+  const initialState = modules
+    .map(module => module.initialState || (f => f))
+    .reduce((state, initialState) => initialState(state), {})
+
   return {
     reducers,
     middlewares,
-    enhancers
+    enhancers,
+    initialState,
   }
 }
 
diff --git a/test/bootstrap.test.js b/test/bootstrap.test.js
index 5c42efc..bd54a53 100644
--- a/test/bootstrap.test.js
+++ b/test/bootstrap.test.js
@@ -44,6 +44,24 @@ test('Boostrap new app with an initial state', assert => {
   })
 })
 
+test('Boostrap new app with initial state on modules', assert => {
+  const initialState = { foo: 'bar' }
+  const testModule = { initialState: (state) => initialState }
+
+  const app = boot(null, [testModule])
+
+  app.then(({action, store}) => {
+
+    assert.deepEqual(
+      store.getState(),
+      initialState,
+      'State is equal to module\'s initial state'
+    )
+
+    assert.end()
+  })
+})
+
 test('Boostrap new app with a module implementing a reducer', assert => {
   const initialState = {
     foo: 'bar'
@@ -212,4 +230,4 @@ test('Boostrap new app with a module implementing an enhancer', assert => {
 
     assert.end()
   })
-})
\ No newline at end of file
+})