diff --git a/tests/ctst/HOW_TO_WRITE_TESTS.md b/tests/ctst/HOW_TO_WRITE_TESTS.md
index 34a4634fe..777eac736 100644
--- a/tests/ctst/HOW_TO_WRITE_TESTS.md
+++ b/tests/ctst/HOW_TO_WRITE_TESTS.md
@@ -117,5 +117,5 @@ specific tags.
 
 > Validate your test before merging.
 
-If a test pass once, please ensure it passes for the good reasons.
+If a test passes once, please ensure it passes for the good reasons.
 False positives are hard to detect once merged.