diff --git a/src/usr/lib/rsetup/cli/test/mpp.sh b/src/usr/lib/rsetup/cli/test/mpp.sh
index 4ff60c2..09f06f8 100644
--- a/src/usr/lib/rsetup/cli/test/mpp.sh
+++ b/src/usr/lib/rsetup/cli/test/mpp.sh
@@ -14,7 +14,7 @@ mpp_enable_logging() {
     export mpp_log_level=6
     export GST_DEBUG="2,*mpp*:4,*fps*:7"
     export LIBV4L_RKMPP_LOG_LEVEL=6
-    export DISPLAY=":0"
+    export DISPLAY="${DISPLAY:-:0}"
 }
 
 mpp_play() {