diff --git a/packages/ProbLog/problog_examples/office.pl b/packages/ProbLog/problog_examples/office.pl
index 115a22d4a..cc3fdd08d 100644
--- a/packages/ProbLog/problog_examples/office.pl
+++ b/packages/ProbLog/problog_examples/office.pl
@@ -3,13 +3,13 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % ProbLog program describing an office window
 % example for using hybrid ProbLog
-% $Id: office.pl 4876 2010-10-05 16:15:57Z theo $
+% $Id: office.pl 4970 2010-10-21 08:47:36Z bernd $
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 :- use_module('../problog').
 
-width(gaussian(2,1)).
-length(gaussian(9,3)).
+(W,gaussian(2,1)) :: width(W).
+(L,gaussian(9,3)) :: length(L).
 0.8 :: office_has_window.
 0.001 :: corridor_has_window.