diff --git a/days/28-30-regex/regex.ipynb b/days/28-30-regex/regex.ipynb
index bc0c97ec..3c611509 100644
--- a/days/28-30-regex/regex.ipynb
+++ b/days/28-30-regex/regex.ipynb
@@ -92,7 +92,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "I am bold and want do do 200 days (note strings are inmutable, so save to a new string)"
+    "I am bold and want to do 200 days (note strings are inmutable, so save to a new string)"
    ]
   },
   {