diff --git a/examples/ipython-demo.ipynb b/examples/ipython-demo.ipynb
index a9da829411e4ed38313dbbeaf9ba0dccfb4132ec..1635dcc31c9b3a229328f4fede2f913f6d9a1c1e 100644
--- a/examples/ipython-demo.ipynb
+++ b/examples/ipython-demo.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:feb0eba3ebfcee43d39ecc6ec00c204e004dfdde2b89c4afe16f3c19bf2ee045"
+  "signature": "sha256:85c637b863a4bbbd3fb91eca8682d36d9874a53a6db35b18f1c53bb53b3c6bdc"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -13,6 +13,7 @@
      "collapsed": false,
      "input": [
       "from __future__ import division\n",
+      "import numpy as np\n",
       "import pyopencl as cl\n",
       "import pyopencl.array"
      ],
@@ -61,8 +62,8 @@
        "stream": "stdout",
        "text": [
         "Choose platform:\n",
-        "[0] <pyopencl.Platform 'AMD Accelerated Parallel Processing' at 0x7f85ffe8e500>\n",
-        "[1] <pyopencl.Platform 'Intel(R) OpenCL' at 0x35558f0>\n"
+        "[0] <pyopencl.Platform 'AMD Accelerated Parallel Processing' at 0x7f244be8e500>\n",
+        "[1] <pyopencl.Platform 'Intel(R) OpenCL' at 0x3adcef0>\n"
        ]
       },
       {
@@ -81,7 +82,7 @@
        ]
       }
      ],
-     "prompt_number": 4
+     "prompt_number": 5
     },
     {
      "cell_type": "markdown",
@@ -108,7 +109,7 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 8
+     "prompt_number": 6
     },
     {
      "cell_type": "markdown",
@@ -138,7 +139,7 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 10
+     "prompt_number": 7
     },
     {
      "cell_type": "markdown",
@@ -159,13 +160,13 @@
       {
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 11,
+       "prompt_number": 8,
        "text": [
-        "<pyopencl._cl.Event at 0x3452ec0>"
+        "<pyopencl._cl.Event at 0x39dac20>"
        ]
       }
      ],
-     "prompt_number": 11
+     "prompt_number": 8
     },
     {
      "cell_type": "markdown",
@@ -183,7 +184,7 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 12
+     "prompt_number": 9
     }
    ],
    "metadata": {}