Index: /trunk/src/VBox/Installer/darwin/VirtualBox/preflight
===================================================================
--- /trunk/src/VBox/Installer/darwin/VirtualBox/preflight	(revision 92499)
+++ /trunk/src/VBox/Installer/darwin/VirtualBox/preflight	(revision 92500)
@@ -16,5 +16,5 @@
 
 # Check environment.
-if [ "${INSTALLER_TEMP}x" == "x" ]; then
+if [ "x${INSTALLER_TEMP}" = "x" ]; then
     echo "Required environment variable INSTALLER_TEMP is missing. Aborting installation."
     exit 1;