diff --git a/ChangeLog b/ChangeLog
index fe3af99..8122055 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2007-10-09  Simon McVittie  <simon.mcvittie@collabora.co.uk>
+
+	* tools/run-with-tmp-session-bus.sh: replace "export FOO=bar" with
+	POSIXly correct "FOO=bar; export FOO" (#9280)
+
 2007-09-20  Ryan Lortie  <desrt@desrt.ca>
 
 	Add argument path matching support.  Bug #11066.
diff --git a/tools/run-with-tmp-session-bus.sh b/tools/run-with-tmp-session-bus.sh
index c04e238..eeac51a 100755
--- a/tools/run-with-tmp-session-bus.sh
+++ b/tools/run-with-tmp-session-bus.sh
@@ -38,16 +38,19 @@ if ! test -e "$DBUS_TOP_BUILDDIR"/bus/dbus-daemon ; then
     die "$DBUS_TOP_BUILDDIR/bus/dbus-daemon does not exist"
 fi
 
-export PATH="$DBUS_TOP_BUILDDIR"/bus:$PATH
+PATH="$DBUS_TOP_BUILDDIR"/bus:$PATH
+export PATH
 ## the libtool script found by the path search should already do this, but
-export LD_LIBRARY_PATH=$DBUS_TOP_BUILDDIR/dbus/.libs:$LD_LIBRARY_PATH
+LD_LIBRARY_PATH=$DBUS_TOP_BUILDDIR/dbus/.libs:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH
 
 unset DBUS_SESSION_BUS_ADDRESS
 unset DBUS_SESSION_BUS_PID
 
 echo "Running $DBUS_TOP_BUILDDIR/tools/dbus-launch --sh-syntax --config-file=$CONFIG_FILE" >&2
 
-export DBUS_USE_TEST_BINARY=1 
+DBUS_USE_TEST_BINARY=1
+export DBUS_USE_TEST_BINARY
 eval `$DBUS_TOP_BUILDDIR/tools/dbus-launch --sh-syntax --config-file=$CONFIG_FILE`
 
 if test -z "$DBUS_SESSION_BUS_PID" ; then