--- src/Makefile.in.orig	Tue Mar 26 12:27:14 2002
+++ src/Makefile.in	Tue Mar 26 12:28:03 2002
@@ -87,7 +87,7 @@
 
 ithought_LDADD = $(GTK_LIBS) $(XML2_LIBS)
 
-INCLUDES =  $(GTK_INCLUDEDIR) $(XML2_INCLUDEDIR) -I$(includedir) -DDATADIR=\"$(prefix)/share\"
+INCLUDES =  $(GTK_INCLUDEDIR) $(XML2_INCLUDEDIR) -I$(includedir) -DDATADIR=\"$(datadir)\"
 
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
 CONFIG_CLEAN_FILES = 
