--- /dev/null
+Index: vym/vym.pro
+===================================================================
+--- vym.orig/vym.pro
++++ vym/vym.pro
+@@ -258,7 +258,7 @@ FORMS = \
+ warningdialog.ui \
+
+ isEmpty( PREFIX ) {
+- PREFIX = /usr/local
++ PREFIX = /usr
+ count( INSTALLDIR, 1 ) {
+ PREFIX = $${INSTALLDIR}
+ message( "Please use PREFIX instead of INSTALLDIR" )