diff --git a/rdp-proxy/entrypoint.sh b/rdp-proxy/entrypoint.sh
index f8df8c9..7c26ce7 100644
--- a/rdp-proxy/entrypoint.sh
+++ b/rdp-proxy/entrypoint.sh
@@ -183,6 +183,8 @@ cat > /opt/portal/index.html <<HTML
 HTML
 
 export DISPLAY="$DISPLAY_NUM"
+DISPLAY_N="${DISPLAY_NUM#:}"
+rm -f "/tmp/.X${DISPLAY_N}-lock" "/tmp/.X11-unix/X${DISPLAY_N}" 2>/dev/null || true
 Xvfb "$DISPLAY_NUM" -screen 0 "$SCREEN_GEOMETRY" >/tmp/xvfb.log 2>&1 &
 sleep 1
 
