diff --git a/days/28-30-regex/regex.ipynb b/days/28-30-regex/regex.ipynb
index 3c611509..dc9e7861 100644
--- a/days/28-30-regex/regex.ipynb
+++ b/days/28-30-regex/regex.ipynb
@@ -398,7 +398,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Or what if I want to change all the #nDaysOf... to #nDaysOfPyton? You can use `re.sub` for this. Note how I use the capturing parenthesis to port over the matching part of the string to the replacement (2nd argument) where I use `\\1` to reference it:"
+    "Or what if I want to change all the #nDaysOf... to #nDaysOfPython? You can use `re.sub` for this. Note how I use the capturing parenthesis to port over the matching part of the string to the replacement (2nd argument) where I use `\\1` to reference it:"
    ]
   },
   {