diff --git a/package-debian.sh b/package-debian.sh
index 2c9eb69d..93621082 100644
--- a/package-debian.sh
+++ b/package-debian.sh
@@ -604,6 +604,16 @@ chmod 570 /opt/v2rayN/binConfigs
 chown -R v2rayn-core:v2rayn /opt/v2rayN/guiLogs
 chmod 750 /opt/v2rayN/guiLogs
 exit 0
+EOF
+
+  # prerm
+  install -m 755 /dev/stdin "$DEBIAN_DIR/prerm" <<'EOF'
+#!/bin/sh
+set -ex
+pgrep --uid 785 && pkill --uid 785 || true
+id -u 785 && userdel v2rayn-core || true
+getent group v2rayn && groupdel v2rayn || true
+exit 0
 EOF
 
   # postrm
@@ -614,9 +624,6 @@ update-desktop-database /usr/share/applications >/dev/null 2>&1 || true
 if command -v gtk-update-icon-cache >/dev/null 2>&1; then
   gtk-update-icon-cache -f /usr/share/icons/hicolor >/dev/null 2>&1 || true
 fi
-pgrep --uid 785 && pkill --uid 785 || true
-id -u 785 && userdel v2rayn-core || true
-getent group v2rayn && groupdel v2rayn || true
 exit 0
 EOF