diff --git a/curriculum/challenges/english/10-coding-interview-prep/rosetta-code/sum-of-a-series.md b/curriculum/challenges/english/10-coding-interview-prep/rosetta-code/sum-of-a-series.md
index 3e7e0b4e4f3..21640c82bf7 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/rosetta-code/sum-of-a-series.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/rosetta-code/sum-of-a-series.md
@@ -8,7 +8,7 @@ dashedName: sum-of-a-series
# --description--
-Compute the **n**th term of a [series](), i.e. the sum of the **n** first terms of the corresponding [sequence](https://en.wikipedia.org/wiki/sequence). Informally this value, or its limit when **n** tends to infinity, is also called the *sum of the series*, thus the title of this task. For this task, use: $S_n = \displaystyle\sum_{k=1}^n \frac{1}{k^2}$.
+Compute the **n**th term of a series, i.e. the sum of the **n** first terms of the corresponding sequence. Informally this value, or its limit when **n** tends to infinity, is also called the *sum of the series*, thus the title of this task. For this task, use: $S_n = \displaystyle\sum_{k=1}^n \frac{1}{k^2}$.
# --instructions--