diff --git a/aer/matrix_product_state.ipynb b/aer/matrix_product_state.ipynb
index a2278a4..56ca3d0 100644
--- a/aer/matrix_product_state.ipynb
+++ b/aer/matrix_product_state.ipynb
@@ -33,7 +33,7 @@
     "The state vector representation implies an exponential size representation, regardless of the actual circuit. Every quantum gate operating on this representation requires exponential time and memory.\n",
     "\n",
     "The matrix product state reprentation offers a local representation, in the form:\n",
-    "$\\Gamma^{[1]} \\lambda^{[1]} \\Gamma^{[2]} \\lambda^{[2]}\\ldots \\Gamma^{[1]} \\lambda^{[n-1]} \\Gamma^{[n]}$. The $c_{i_1 \\ldots i_n}$ can be computed from this structure.  \n",
+    "$\\Gamma^{[1]} \\lambda^{[1]} \\Gamma^{[2]} \\lambda^{[2]}\\ldots \\Gamma^{[n-1]} \\lambda^{[n-1]} \\Gamma^{[n]}$. The $c_{i_1 \\ldots i_n}$ can be computed from this structure.  \n",
     "\n",
     "Every $\\Gamma^{[i]}$ is a tensor of complex numbers that represents qubit $i$. Every $\\lambda^{[i]}$ is a matrix of real numbers that is used to normalize the amplitudes of qubits $i$ and $i+1$. \n",
     "\n",