diff --git a/CM20315/CM20315_Intro.ipynb b/CM20315/CM20315_Intro.ipynb
index cc4f90a..ba811db 100644
--- a/CM20315/CM20315_Intro.ipynb
+++ b/CM20315/CM20315_Intro.ipynb
@@ -176,7 +176,7 @@
         "# Color represents y value (brighter = higher value)\n",
         "# Black = -10 or less, White = +10 or more\n",
         "# 0 = mid orange\n",
-        "# Lines are conoturs where value is equal\n",
+        "# Lines are contours where value is equal\n",
         "draw_2D_function(x1,x2,y)\n",
         "\n",
         "# TODO\n",