diff --git a/wmitime/README b/wmitime/README
index 285be7c..5fc6b48 100644
--- a/wmitime/README
+++ b/wmitime/README
@@ -20,6 +20,10 @@ Let me know what you think of it. ;)
 
 Installing
 --------------------------------------------------------------
+Make sure libdockapp (at least version 0.7.0) is installed. It
+may be obtained at
+http://windowmaker.org/dockapps/?name=libdockapp
+
 make
 make install