diff --git a/stacks_queues/sort_stack/sort_stack_solution.ipynb b/stacks_queues/sort_stack/sort_stack_solution.ipynb
index c8ed967..4e51e64 100644
--- a/stacks_queues/sort_stack/sort_stack_solution.ipynb
+++ b/stacks_queues/sort_stack/sort_stack_solution.ipynb
@@ -62,7 +62,7 @@
     "* Our buffer will hold elements in reverse sorted order, smallest at the top\n",
     "* Store the current top element in a temp variable\n",
     "* While stack is not empty\n",
-    "    * While buffer is empty or buffer top is > than temp\n",
+    "    * While buffer is not empty or buffer top is > than temp\n",
     "        * Move buffer top to stack\n",
     "    * Move temp to top of buffer\n",
     "* Return buffer\n",