diff --git a/matlab/@dynSeries/hpcycle.m b/matlab/@dynSeries/hpcycle.m
index a2013f6b1..299e31ae7 100644
--- a/matlab/@dynSeries/hpcycle.m
+++ b/matlab/@dynSeries/hpcycle.m
@@ -1,4 +1,4 @@
-function ts = hpcycle(ts, lambda)
+function ts = hpcycle(ts, lambda) % --*-- Unitary tests --*--
 
 % Copyright (C) 2013 Dynare Team
 %
diff --git a/matlab/@dynSeries/hptrend.m b/matlab/@dynSeries/hptrend.m
index 501be2ba8..e1c6c560c 100644
--- a/matlab/@dynSeries/hptrend.m
+++ b/matlab/@dynSeries/hptrend.m
@@ -1,4 +1,4 @@
-function ts = hptrend(ts, lambda)
+function ts = hptrend(ts, lambda) % --*-- Unitary tests --*--
 
 % Copyright (C) 2013 Dynare Team
 %