diff --git a/content/Week_1_6/WS_1_6_solution.ipynb b/content/Week_1_6/WS_1_6_solution.ipynb
index 98e8b25bdf62541bd25adfe0af445dd13cdd90e2..a3de7f4d53f1d976e5d87aa1ed4840d48580d98e 100644
--- a/content/Week_1_6/WS_1_6_solution.ipynb
+++ b/content/Week_1_6/WS_1_6_solution.ipynb
@@ -953,7 +953,7 @@
     "\n",
     "\n",
     "$$\n",
-    "-2T_1 +T_2 = -(1+\\alpha)T_0 - \\alpha T_s \\Delta x^2\n",
+    "-2T_1 +T_2 = -(1-\\alpha \\Delta x^2)T_0 - \\alpha T_s \\Delta x^2\n",
     "$$\n",
     "\n",
     "**For $i = 1$:**\n",