diff --git a/arrays_strings/str_diff/str_diff_challenge.ipynb b/arrays_strings/str_diff/str_diff_challenge.ipynb
index b91c27d..aeb36f9 100644
--- a/arrays_strings/str_diff/str_diff_challenge.ipynb
+++ b/arrays_strings/str_diff/str_diff_challenge.ipynb
@@ -137,7 +137,7 @@
    "source": [
     "## Solution Notebook\n",
     "\n",
-    "Review the [Solution Notebook]() for a discussion on algorithms and code solutions."
+    "Review the [Solution Notebook](http://nbviewer.jupyter.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/str_diff/str_diff_solution.ipynb) for a discussion on algorithms and code solutions."
    ]
   }
  ],