diff --git a/notebooks/problem0025.ipynb b/notebooks/problem0025.ipynb
index d9f2629..df7648e 100644
--- a/notebooks/problem0025.ipynb
+++ b/notebooks/problem0025.ipynb
@@ -9,7 +9,7 @@
     "\n",
     "This problem can be solved with a scientific calculator!\n",
     "\n",
-    "We're looking at [Fibonacci numbers](https://en.wikipedia.org/wiki/Fibonacci_sequence) again, after last seeing them in [problem 2](https://projecteuler.net/problem=2). Our goal is to find the first 1000 digit number in the sequence. Mathematically, we can state this is as the lowest $n$ such that\n",
+    "We're looking at [Fibonacci numbers](https://en.wikipedia.org/wiki/Fibonacci_sequence) again, after last seeing them in [problem 2](https://projecteuler.net/problem=2). Our goal is to find the index of the first 1000 digit number in the sequence. Mathematically, we can state this is as the lowest $n$ such that\n",
     "$$1+\\log{F_n} \\geq 1000$$\n",
     "(Here, $\\log$ is the base 10 logarithm).\n",
     "\n",