diff --git a/app/scripts/keyring-controller.js b/app/scripts/keyring-controller.js
index e1b1c4335..7669b9f8f 100644
--- a/app/scripts/keyring-controller.js
+++ b/app/scripts/keyring-controller.js
@@ -164,8 +164,11 @@ class KeyringController extends EventEmitter {
       return keyring.getAccounts()
     })
     .then((accounts) => {
+      return this.checkForDuplicate(type, accounts)
+    })
+    .then((checkedAccounts) => {
       this.keyrings.push(keyring)
-      return this.setupAccounts(accounts)
+      return this.setupAccounts(checkedAccounts)
     })
     .then(() => this.persistAllKeyrings())
     .then(() => this.fullUpdate())
@@ -175,6 +178,24 @@ class KeyringController extends EventEmitter {
     })
   }
 
+  // For now just checks for simple key pairs
+  // but in the future
+  // should possibly add HD and other types
+  //
+  checkForDuplicate (type, newAccount) {
+    return this.getAccounts()
+    .then((accounts) => {
+      switch (type) {
+        case 'Simple Key Pair':
+          let isNotIncluded = !accounts.find((key) => key === newAccount[0] || key === ethUtil.stripHexPrefix(newAccount[0]))
+          return (isNotIncluded) ? Promise.resolve(newAccount) : Promise.reject(new Error('The account your are trying to import is a duplicate'))
+        default:
+          return Promise.resolve(newAccount)
+      }
+    })
+  }
+
+
   // Add New Account
   // @number keyRingNum
   //
diff --git a/package.json b/package.json
index 0c4ca9096..475cdb2b3 100644
--- a/package.json
+++ b/package.json
@@ -109,7 +109,7 @@
     "valid-url": "^1.0.9",
     "vreme": "^3.0.2",
     "web3": "0.18.2",
-    "web3-provider-engine": "^9.1.0",
+    "web3-provider-engine": "^10.0.1",
     "web3-stream-provider": "^2.0.6",
     "xtend": "^4.0.1"
   },
diff --git a/test/unit/personal-message-manager-test.js b/test/unit/personal-message-manager-test.js
index 77e1656c5..f2c01392c 100644
--- a/test/unit/personal-message-manager-test.js
+++ b/test/unit/personal-message-manager-test.js
@@ -88,7 +88,7 @@ describe('Personal Message Manager', function() {
   })
 
   describe('#normalizeMsgData', function() {
-    it('converts text to a utf8 buffer', function() {
+    it('converts text to a utf8 hex string', function() {
       var input = 'hello'
       var output = messageManager.normalizeMsgData(input)
       assert.equal(output, '0x68656c6c6f', 'predictably hex encoded')