diff --git a/examples/notebooks/Deep Generative Model.ipynb b/examples/notebooks/Deep Generative Model.ipynb
index d9362dd..55ed9e6 100644
--- a/examples/notebooks/Deep Generative Model.ipynb	
+++ b/examples/notebooks/Deep Generative Model.ipynb	
@@ -129,7 +129,7 @@
     "\n",
     "\\begin{align}\n",
     "\\log p(x) &= \\log \\sum_{y} \\int q(z,y|x) \\frac{p(x, y, z)}{q(z,y|x)} \\ dz \\geq \\sum_{y} q(y|x) \\int q(z|x, y) \\log \\frac{p(x, y, z)}{q(z,y|x)} \\ dz\\\\\n",
-    "&= \\sum_{y} q(y|x) \\int q(z|x, y) \\log \\frac{p(x, y, z)}{q(z,y|x)} \\ dz + \\sum_{y} q(y|x) \\log q(y|x) \\int q(z|x, y) \\ dz\\\\\n",
+    "&= \\sum_{y} q(y|x) \\int q(z|x, y) \\log \\frac{p(x, y, z)}{q(z|x,y)} \\ dz - \\sum_{y} q(y|x) \\log q(y|x) \\int q(z|x, y) \\ dz\\\\\n",
     "&= \\sum_{y} q(y|x) (- \\mathcal{L}(x,y)) + \\mathcal{H}(q(y|x)) = - \\mathcal{U}(x)\n",
     "\\end{align}\n",
     "\n",