diff --git a/topics/basics/testing_plugins/testing_faq.md b/topics/basics/testing_plugins/testing_faq.md
index a45b1ae3d..fabd2a85f 100644
--- a/topics/basics/testing_plugins/testing_faq.md
+++ b/topics/basics/testing_plugins/testing_faq.md
@@ -33,7 +33,8 @@ In some situations, added or changed files (e.g. DTDs provided by plugin) are no
 
 ### How to enable DEBUG/TRACE logging?
 
-Set system properties `idea.log.debug.categories` or `idea.log.trace.categories`, respectively.
+Provide JVM system properties (Gradle: via `systemProperty` for `test` task) `idea.log.debug.categories` or `idea.log.trace.categories`, respectively.
+Multiple categories can set using a comma separated value list.
 
 ### How to get separate logs for failing tests?