diff --git a/regexps.qmd b/regexps.qmd
index 5706d9a..742ccc5 100644
--- a/regexps.qmd
+++ b/regexps.qmd
@@ -456,7 +456,7 @@ All of these are these described below.
 ### Matching a repeated pattern
 
 You can refer back to previously matched text inside parentheses by using **back reference**.
-Back references are usually numbered: `\1` refers to the match contained in the first parentheses, `\2` in the the second parentheses, and so on.
+Back references are usually numbered: `\1` refers to the match contained in the first parenthesis, `\2` in the second parenthesis, and so on.
 For example, the following pattern finds all fruits that have a repeated pair of letters:
 
 ```{r}