diff --git a/docs/index.md b/docs/index.md
index 74ab2db42b..90e14e8a3d 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -934,7 +934,7 @@ If set to `true`, Mocha returns exit code `0` even if there are failed tests dur
 
 ### `--fail-zero`
 
-> _Since in v9.1.0_
+> _Since v9.1.0_
 
 Fail test run if no tests are encountered with `exit-code: 1`.