diff --git a/9-regular-expressions/06-regexp-boundary/article.md b/9-regular-expressions/06-regexp-boundary/article.md
index aad65877..7c9f442f 100644
--- a/9-regular-expressions/06-regexp-boundary/article.md
+++ b/9-regular-expressions/06-regexp-boundary/article.md
@@ -25,7 +25,7 @@ So, it matches the pattern `pattern:\bHello\b`, because:
 
 1. At the beginning of the string matches the first test `pattern:\b`.
 2. Then matches the word `pattern:Hello`.
-3. Then the test `pattern:\b` matches again, as we're between `subject:o` and a space.
+3. Then the test `pattern:\b` matches again, as we're between `subject:o` and a comma.
 
 The pattern `pattern:\bHello\b` would also match. But not `pattern:\bHell\b` (because there's no word boundary after `l`) and not `Java!\b` (because the exclamation sign is not a wordly character `pattern:\w`, so there's no word boundary after it).