diff --git a/BUILDING.md b/BUILDING.md
index 025b6b69d71cfc..16c15c77e1c58f 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -326,7 +326,8 @@ by providing the name of a subsystem:
 $ tools/test.py child-process
 ```
 
-You can also execute the tests in a tests directory (such as `test/message`):
+You can also execute the tests in a test suite directory
+(such as `test/message`):
 
 ```text
 $ tools/test.py test/message