diff --git a/app/scripts/migrations/012.js b/app/scripts/migrations/012.js
new file mode 100644
index 000000000..8361b3793
--- /dev/null
+++ b/app/scripts/migrations/012.js
@@ -0,0 +1,36 @@
+const version = 12
+
+/*
+
+This migration modifies our notices to delete their body after being read.
+
+*/
+
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: function (originalVersionedData) {
+    let versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = transformState(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  const newState = state
+  newState.NoticeController.noticesList.forEach((notice) => {
+    if (notice.read) {
+      notice.body = ''
+    }
+  })
+  return newState
+}
diff --git a/app/scripts/notice-controller.js b/app/scripts/notice-controller.js
index 0d72760fe..57aad40c5 100644
--- a/app/scripts/notice-controller.js
+++ b/app/scripts/notice-controller.js
@@ -41,6 +41,7 @@ module.exports = class NoticeController extends EventEmitter {
       var notices = this.getNoticesList()
       var index = notices.findIndex((currentNotice) => currentNotice.id === noticeToMark.id)
       notices[index].read = true
+      notices[index].body = ''
       this.setNoticesList(notices)
       const latestNotice = this.getLatestUnreadNotice()
       cb(null, latestNotice)
diff --git a/test/lib/migrations/004.json b/test/lib/migrations/004.json
index 0e2075c46..a6487c1e2 100644
--- a/test/lib/migrations/004.json
+++ b/test/lib/migrations/004.json
@@ -48,6 +48,13 @@
             "title":"Ending Morden Support",
             "body":"Due to [recent events](https://blog.ethereum.org/2016/11/20/from-morden-to-ropsten/), MetaMask is now deprecating support for the Morden Test Network.\n\nUsers will still be able to access Morden through a locally hosted node, but we will no longer be providing hosted access to this network through [Infura](http://infura.io/).\n\nPlease use the new Ropsten Network as your new default test network.\n\nYou can fund your Ropsten account using the buy button on your account page.\n\nBest wishes!\nThe MetaMask Team\n\n",
             "id":0
+         },
+         {
+           "read":false,
+           "date":"Sat Dec 17 2016",
+           "title":"Keeping It Real",
+           "body":"nonempty",
+           "id":1
          }
       ],
       "conversionRate":12.66441492,
diff --git a/test/unit/migrations-test.js b/test/unit/migrations-test.js
index d2a83be77..ccd1477b0 100644
--- a/test/unit/migrations-test.js
+++ b/test/unit/migrations-test.js
@@ -15,6 +15,8 @@ const migration8 = require(path.join('..', '..', 'app', 'scripts', 'migrations',
 const migration9 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '009'))
 const migration10 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '010'))
 const migration11 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '011'))
+const migration12 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '012'))
+
 
 const oldTestRpc = 'https://rawtestrpc.metamask.io/'
 const newTestRpc = 'https://testrpc.metamask.io/'
@@ -91,6 +93,11 @@ describe('wallet1 is migrated successfully', () => {
     }).then((eleventhResult) => {
       assert.equal(eleventhResult.data.isDisclaimerConfirmed, null, 'isDisclaimerConfirmed should not exist')
       assert.equal(eleventhResult.data.TOSHash, null, 'TOSHash should not exist')
+
+      return migration12.migrate(eleventhResult)
+    }).then((twelfthResult) => {
+      assert.equal(twelfthResult.data.NoticeController.noticesList[0].body, '', 'notices that have been read should have an empty body.')
+      assert.equal(twelfthResult.data.NoticeController.noticesList[1].body, 'nonempty', 'notices that have not been read should not have an empty body.')
     })
 
   })