diff --git a/examples/fortran/ipython-integration-demo.ipynb b/examples/fortran/ipython-integration-demo.ipynb
index d9ac1f1b22a92b138e4f6432315f281b2a894aed..64fcb0af4d1dcb08e12a4cda409eb99bb443ede9 100644
--- a/examples/fortran/ipython-integration-demo.ipynb
+++ b/examples/fortran/ipython-integration-demo.ipynb
@@ -49,7 +49,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print(prog)"
+    "print(prog)  # noqa: F821"
    ]
   },
   {
@@ -105,17 +105,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print(prog)"
+    "print(prog)  # noqa: F821"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {