diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd01c0d..85d0fe2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,10 +5,17 @@ project(deepin-application-manager)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+#install settings
+if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    set(CMAKE_INSTALL_PREFIX /usr)
+endif ()
+
 add_subdirectory(src)
 add_subdirectory(misc)
 
 if (NOT (${CMAKE_BUILD_TYPE} MATCHES "Debug"))
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Ofast")
+
     # generate qm
     execute_process(COMMAND bash "translate_generation.sh"
         WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
@@ -16,5 +23,4 @@ endif ()
 
 # qm files
 file(GLOB QM_FILES "translations/*.qm")
-install(FILES ${QM_FILES}
-    DESTINATION share/dde-application-manager/translations)
+install(FILES ${QM_FILES} DESTINATION share/dde-application-manager/translations)
diff --git a/debian/rules b/debian/rules
index a140efe..1e980d7 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,5 +1,7 @@
 #!/usr/bin/make -f
 
+export QT_SELECT=qt5
+
 include /usr/share/dpkg/default.mk
 
 %: