--- VirtualBox-4.3.8/src/VBox/Installer/linux/VBox.sh~	2014-02-25 19:09:10.000000000 +0200
+++ VirtualBox-4.3.8/src/VBox/Installer/linux/VBox.sh	2014-03-01 14:07:14.898417429 +0200
@@ -19,9 +19,9 @@
 test -r "${CONFIG}" &&
     . "${CONFIG}"
 test -z "${INSTALL_DIR}" &&
-    if test -f /usr/lib/virtualbox/VirtualBox &&
-        test -x /usr/lib/virtualbox/VirtualBox; then
-        INSTALL_DIR=/usr/lib/virtualbox
+    if test -f @INSTALL_DIR@/VBoxSVC &&
+        test -x @INSTALL_DIR@/VBoxSVC; then
+        INSTALL_DIR=@INSTALL_DIR@
     else
         echo "Could not find VirtualBox installation. Please reinstall."
         exit 1