diff --git a/wmifs/INSTALL b/wmifs/INSTALL
index a072540..4160d81 100644
--- a/wmifs/INSTALL
+++ b/wmifs/INSTALL
@@ -17,6 +17,9 @@ Requirements
 	the installation copies the GLOBAL config file
 	there, don't worry, nothing will be overwritten ;-)
 
+Make sure libdockapp (at least version 0.7.0) is installed. It
+may be obtained at
+http://windowmaker.org/dockapps/?name=libdockapp
 
 Installation
 --------------------------------------------------------------