diff --git a/settings-debian.gradle b/settings-debian.gradle
index b5d4507e6cd..77733cf4ca1 100644
--- a/settings-debian.gradle
+++ b/settings-debian.gradle
@@ -1,3 +1,8 @@
+/*
+ * Setting file only for Debian Gradle 4.4.1.
+ * Usage: gradle --settings-file=settings-debian.gradle build
+ */
+
 import org.gradle.util.GradleVersion
 
 // required Gradle version for build