diff --git a/qt5-qtserialport.spec b/qt5-qtserialport.spec
index 34bdff5..b29795e 100644
--- a/qt5-qtserialport.spec
+++ b/qt5-qtserialport.spec
@@ -1,13 +1,13 @@
 Name:           qt5-qtserialport
 Version:        5.11.1
-Release:        5
+Release:        6
 Summary:        Serialport component of qt5
 License:        LGPLv2 with exceptions or LGPLv3 with exceptions
 URL:            http://www.qt.io
 Source0:        https://download.qt.io/new_archive/qt/5.11/5.11.1/submodules/qtserialport-everywhere-src-5.11.1.tar.xz
 
 BuildRequires:  qt5-qtbase-devel >= %{version} pkgconfig(libudev)
-Requires:       %{_qt5} = %{_qt5_version}
+%{?_qt5:Requires: %{_qt5} = %{_qt5_version}}
 
 %description
 Qt Serial Port provides the basic functionality, which includes configuring, I/O operations,
@@ -59,6 +59,9 @@ popd
 %{_qt5_examplesdir}/
 
 %changelog
+* Thu Mar 18 2021 maminjie <maminjie1@huawei.com> - 5.11.1-6
+- Fix syntax error when macro is not defined
+
 * Mon Sep 14 2020 liuweibo <liuweibo10@huawei.com> - 5.11.1-5
 - Fix Source0