2 files changed, 37 insertions, 0 deletions
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)