diff -up ./configure.ac.locationfix ./configure.ac
--- ./configure.ac.locationfix	2009-10-18 19:41:40.000000000 +0000
+++ ./configure.ac	2011-09-03 11:05:45.234826517 +0000
@@ -49,7 +49,7 @@ dnl Check for path search option
 AC_ARG_ENABLE([path-search],
     AC_HELP_STRING([--enable-path-search],
        [search path for units database (default is NO)]),
-    [UDAT=""],[UDAT="$datadir/"])
+    [UDAT=""],[UDAT="$datadir/units/"])
 
 AC_CONFIG_FILES(Makefile)
 AC_OUTPUT
diff -up ./Makefile.in.locationfix ./Makefile.in
--- ./Makefile.in.locationfix	2011-09-03 11:06:37.842279590 +0000
+++ ./Makefile.in	2011-09-03 11:05:45.234826517 +0000
@@ -78,14 +78,14 @@ units@EXEEXT@: $(OBJECTS)
 	$(CC) $(LDFLAGS) -o units $(OBJECTS) $(LIBS)
 
 install: units@EXEEXT@ units.dat install-doc
-	$(srcdir)/mkinstalldirs $(DESTDIR)$(bindir) $(DESTDIR)$(datadir)
+	$(srcdir)/mkinstalldirs $(DESTDIR)$(bindir) $(DESTDIR)$(datadir)/units
 	$(INSTALL_PROGRAM) units $(DESTDIR)$(bindir)/`echo units|sed '$(transform)'`
-	$(INSTALL_DATA) $(srcdir)/units.dat $(DESTDIR)$(datadir)/units.dat
+	$(INSTALL_DATA) $(srcdir)/units.dat $(DESTDIR)$(datadir)/units/units.dat
 
 install-strip: units@EXEEXT@ units.dat install-doc
 	$(srcdir)/mkinstalldirs $(DESTDIR)$(bindir) $(DESTDIR)$(datadir)
 	$(INSTALL_PROGRAM) -s units $(DESTDIR)$(bindir)/`echo units|sed '$(transform)'`
-	$(INSTALL_DATA) $(srcdir)/units.dat $(DESTDIR)$(datadir)/units.dat
+	$(INSTALL_DATA) $(srcdir)/units.dat $(DESTDIR)$(datadir)/units/units.dat
 
 install-doc: install-man install-info
 
// empty line