diff --git a/test/dependency-test/src1/z.h b/test/dependency-test/src1/z.h
index 8b1378917..e3b44c871 100644
--- a/test/dependency-test/src1/z.h
+++ b/test/dependency-test/src1/z.h
@@ -1 +1 @@
-
+// Dummy comment, supposed to suppress 'empty-file' warning from HP-CXX