diff --git a/wmtime/INSTALL b/wmtime/INSTALL
index 0573be5..1b206bb 100644
--- a/wmtime/INSTALL
+++ b/wmtime/INSTALL
@@ -2,7 +2,9 @@ Installation instructions for WMTime.
 
 Requirements
 --------------------------------------------------------------
-Nothing particular, but a computer might come in handy doh ;-)
+Make sure libdockapp (at least version 0.7.0) is installed. It
+may be obtained at
+http://windowmaker.org/dockapps/?name=libdockapp
 
 
 Installation