diff --git a/arrays_strings/rotation/rotation_solution.ipynb b/arrays_strings/rotation/rotation_solution.ipynb
index 0f548f9..4eb1252 100644
--- a/arrays_strings/rotation/rotation_solution.ipynb
+++ b/arrays_strings/rotation/rotation_solution.ipynb
@@ -64,7 +64,7 @@
    "source": [
     "## Algorithm\n",
     "\n",
-    "Using the following test case:\n",
+    "Examine the following test case:\n",
     "* s1 = 'barbazfoo'\n",
     "* s2 = 'foobarbaz'\n",
     "\n",
@@ -74,7 +74,7 @@
     "\n",
     "Complexity:\n",
     "* Time: O(n)\n",
-    "* Space: O(2n) of additional space for s3, which reduces to O(n)"
+    "* Space: O(n)"
    ]
   },
   {