diff --git a/tests/weston-tests-env b/tests/weston-tests-env
index 2e5fa95..ed54ed9 100755
--- a/tests/weston-tests-env
+++ b/tests/weston-tests-env
@@ -15,7 +15,8 @@ if test x$WAYLAND_DISPLAY != x; then
 elif test x$DISPLAY != x; then
        BACKEND=$abs_builddir/../src/.libs/x11-backend.so
 else
-       BACKEND=$abs_builddir/../src/.libs/wayland-backend.so
+       WESTON="$abs_builddir/../src/weston-launch --"
+       BACKEND=$abs_builddir/../src/.libs/x11-backend.so
 fi
 
 case $1 in