diff --git a/algorithms/algebraic/shor/shor_modular_exponentiation.ipynb b/algorithms/algebraic/shor/shor_modular_exponentiation.ipynb
index 203ed554..032abe3a 100644
--- a/algorithms/algebraic/shor/shor_modular_exponentiation.ipynb
+++ b/algorithms/algebraic/shor/shor_modular_exponentiation.ipynb
@@ -272,7 +272,7 @@
     "    allocate(1, aux)\n",
     "\n",
     "    # set initial values for the addition\n",
-    "    inplace_prepare_int(b_initial_value, b)\n",
+    "    b ^= b_initial_value\n",
     "    X(ctrl[0])\n",
     "    X(ctrl[1])\n",
     "\n",
@@ -553,7 +553,7 @@
     "    allocate(1, aux)\n",
     "\n",
     "    hadamard_transform(power)\n",
-    "    inplace_prepare_int(1, x)\n",
+    "    x ^= 1\n",
     "\n",
     "    mod_exp_func(\n",
     "        modulo_num,\n",
@@ -663,4 +663,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 5
-}
+}
\ No newline at end of file