diff --git a/chrony.spec b/chrony.spec
index 265dd53..162fa21 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -31,7 +31,8 @@ Requires(postun): initscripts
 A client/server for the Network Time Protocol, this program keeps your
 computer's clock accurate. It was specially designed to support
 systems with dial-up Internet connections, and also supports computers
-in permanently connected environments. 
+in permanently connected environments. It can use also hardware reference
+clocks, system real-time clock or manual input as time references.
 
 %prep
 %setup -q -n %{name}-%{version}%{?prerelease}