diff --git a/notebooks/02_quant_activation_overview.ipynb b/notebooks/02_quant_activation_overview.ipynb
index 3756052db..39a0cfc14 100644
--- a/notebooks/02_quant_activation_overview.ipynb
+++ b/notebooks/02_quant_activation_overview.ipynb
@@ -349,18 +349,6 @@
     "sigmoid_out_tensor"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 13,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from brevitas.quant_tensor import QuantTensor\n",
-    "\n",
-    "\n",
-    "assert not isinstance(sigmoid_out_tensor, QuantTensor)"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},