diff --git a/sorting_searching/insertion_sort/insertion_sort_solution.ipynb b/sorting_searching/insertion_sort/insertion_sort_solution.ipynb
index 98f2c6b..1393747 100644
--- a/sorting_searching/insertion_sort/insertion_sort_solution.ipynb
+++ b/sorting_searching/insertion_sort/insertion_sort_solution.ipynb
@@ -105,8 +105,8 @@
     "            raise TypeError('data cannot be None')\n",
     "        if len(data) < 2:\n",
     "            return data\n",
-    "        for l in range(len(data)-1):\n",
-    "            for r in range(l+1, len(data)):\n",
+    "        for r in range(1, len(data)):\n",
+    "            for l in range(r):\n",
     "                if data[r] < data[l]:\n",
     "                    temp = data[r]\n",
     "                    data[l+1:r+1] = data[l:r]\n",