diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1359c56..78d0a7b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,19 +79,11 @@ include(CMakePackageConfigHelpers)
 set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_INCLUDEDIR}/deepin-pdfium)
 set(LIB_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR})
 
-# 创建Qt5版本库
-if(Qt5_FOUND)
-    message(STATUS ">>> Enable Qt5 version of the library")
-    set(QT_DESIRED_VERSION 5)
-    set(TARGET_NAME ${PROJECT_NAME}5)
-    include(target.cmake)
-endif()
-
-# 创建Qt6版本库
 if(Qt6_FOUND)
-    message(STATUS ">>> Enable Qt6 version of the library")
-    # keep the same project name for Qt6 in order to compability with other applications, ie. DFM
     set(QT_DESIRED_VERSION 6)
-    set(TARGET_NAME ${PROJECT_NAME})
-    include(target.cmake)
+else()
+    set(QT_DESIRED_VERSION 5)
 endif()
+
+set(TARGET_NAME ${PROJECT_NAME})
+include(target.cmake)
diff --git a/debian/control b/debian/control
index de1944d..0e6c0f5 100644
--- a/debian/control
+++ b/debian/control
@@ -4,10 +4,8 @@ Priority: optional
 Maintainer: deepin <packages@deepin.com>
 Build-Depends: debhelper (>= 11),
  cmake,
- qt6-base-dev,
- qt6-tools-dev-tools,
- qtbase5-dev,
- qttools5-dev-tools,
+ qt6-base-dev | qtbase5-dev,
+ qt6-tools-dev-tools | qttools5-dev-tools,
  pkg-config,
  libjpeg-dev,
  libicu-dev,
@@ -23,23 +21,11 @@ Standards-Version: 4.3.0
 Package: libdeepin-pdfium
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
-Description: A libaray about PDF base on Qt6.
- A library for parsing and editing and displaying PDF.
-
-Package: libdeepin-pdfium5
-Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}
-Description: A libaray about PDF base on Qt5.
+Description: A libaray about PDF.
  A library for parsing and editing and displaying PDF.
 
 Package: libdeepin-pdfium-dev
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}, libdeepin-pdfium
-Description: A libaray about PDF dev base on Qt6.
+Description: A libaray about PDF dev.
  A libaray that provides for parsing and editing and displaying PDF interface dev.
-
-Package: libdeepin-pdfium5-dev
-Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libdeepin-pdfium5
-Description: A libaray about PDF dev base on Qt5.
- A libaray that provides for parsing and editing and displaying PDF interface dev.
\ No newline at end of file
diff --git a/debian/libdeepin-pdfium5-dev.install b/debian/libdeepin-pdfium5-dev.install
deleted file mode 100644
index 43e6504..0000000
--- a/debian/libdeepin-pdfium5-dev.install
+++ /dev/null
@@ -1,3 +0,0 @@
-/usr/include/deepin-pdfium5/*
-/usr/lib/*/pkgconfig/deepin-pdfium5.pc
-/usr/lib/*/cmake/deepin-pdfium5/*
diff --git a/debian/libdeepin-pdfium5.install b/debian/libdeepin-pdfium5.install
deleted file mode 100644
index 266a782..0000000
--- a/debian/libdeepin-pdfium5.install
+++ /dev/null
@@ -1 +0,0 @@
-/usr/lib/*/libdeepin-pdfium5.so*
\ No newline at end of file
diff --git a/include/dpdfglobal.h b/include/dpdfglobal.h
index 7d37fe1..5c8f8a4 100755
--- a/include/dpdfglobal.h
+++ b/include/dpdfglobal.h
@@ -11,7 +11,9 @@
 #include <QDebug>
 #include <QElapsedTimer>
 #include <QRectF>
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
 #include <QRecursiveMutex>
+#endif
 
 #ifndef BUILD_DEEPDF_STATIC
 #    if defined(BUILD_DEEPDF_LIB)