diff --git a/demos/Wiener_Filter.ipynb b/demos/Wiener_Filter.ipynb
index 8a574b653b3f535544d16af064af261d05cbf5bd..19074536831d2c9912584097283a5d3beb05409f 100644
--- a/demos/Wiener_Filter.ipynb
+++ b/demos/Wiener_Filter.ipynb
@@ -172,7 +172,7 @@
     "    inverter = ift.ConjugateGradient(controller=IC)\n",
     "    # WienerFilterCurvature is (R.adjoint*N.inverse*R + Sh.inverse) plus some handy\n",
     "    # helper methods.\n",
-    "    return ift.library.WienerFilterCurvature(R,N,Sh,inverter)"
+    "    return ift.library.WienerFilterCurvature(R,N,Sh,inverter, sampling_inverter=inverter)"
    ]
   },
   {
@@ -708,28 +708,28 @@
     "\n",
     "https://gitlab.mpcdf.mpg.de/ift/NIFTy\n",
     "\n",
-    "NIFTy v4 **more or less stable!**"
+    "NIFTy v5 **more or less stable!**"
    ]
   }
  ],
  "metadata": {
   "celltoolbar": "Slideshow",
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.12"
+   "pygments_lexer": "ipython3",
+   "version": "3.6.6rc1"
   }
  },
  "nbformat": 4,