diff --git a/cde/programs/dtimsstart/Makefile.am b/cde/programs/dtimsstart/Makefile.am
index d8dbc7bb4..ed234d03e 100644
--- a/cde/programs/dtimsstart/Makefile.am
+++ b/cde/programs/dtimsstart/Makefile.am
@@ -1,4 +1,4 @@
-xsessiondir = ${prefix)/config/Xsession.d
+xsessiondir = $(CDE_INSTALLATION_TOP)/config/Xsession.d
 
 MAINTAINERCLEANFILES = Makefile.in