diff --git a/ukui-biometric-manager.spec b/ukui-biometric-manager.spec
index 74185290cf01f5997379a6fe5c4a5b2633e3dab2..e9d69ca9a0d75e7172662037ecee9d9342422266 100644
--- a/ukui-biometric-manager.spec
+++ b/ukui-biometric-manager.spec
@@ -1,6 +1,6 @@
 Name:          ukui-biometric-manager
 Version:       3.1.2
-Release:       3
+Release:       4
 Summary:       manager for biometric authentication
 License:       GPL-2+
 URL:           http://www.ukui.org
@@ -54,10 +54,14 @@ make INSTALL_ROOT=%{buildroot} install
 %clean
 rm -rf $RPM_BUILD_ROOT
 
-%post
+%posttrans
 ln -sf /usr/bin/biometric-manager /usr/bin/ukui-biometric-manager
+
 %postun
-unlink /usr/bin/ukui-biometric-manager
+if [ -e "/usr/bin/ukui-biometric-manager" ]; then
+    unlink /usr/bin/ukui-biometric-manager
+fi
+
 
 %files
 %{_bindir}/biometric-manager
@@ -68,6 +72,9 @@ unlink /usr/bin/ukui-biometric-manager
 %{_datadir}/kylin-user-guide/data/guide
 
 %changelog
+* Wed May 14 2025 peijiankang <peijiankang@kylinos.cn> - 3.1.2-4
+- fix unlink error
+
 * Tue May 30 2023 peijiankang <peijiankang@kylinos.cn> - 3.1.2-3
 - fix unlink error