diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5ccd5b6..a1d2fd3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,9 @@ set(ALSA ON CACHE BOOL "use ALSA if available")
 set(LOG4CPP OFF CACHE BOOL "use log4cpp if available")
 set(LIVE555URL http://www.live555.com/liveMedia/public/live555-latest.tar.gz CACHE STRING "live555 url")
 set(LIVE555CFLAGS -DBSD=1 -DSOCKLEN_T=socklen_t -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -DALLOW_RTSP_SERVER_PORT_REUSE=1 CACHE STRING "live555 CFGLAGS")
+if(NOT CMAKE_BUILD_TYPE)
+     set (CMAKE_BUILD_TYPE "Release")
+endif()
 
 set(CMAKE_CXX_STANDARD 11)
 
@@ -137,7 +140,9 @@ install (FILES index.html DESTINATION share/${PROJECT_NAME}/)
 install (FILES hls.js/dist/hls.light.min.js DESTINATION share/${PROJECT_NAME}/hls.js/dist/)
 
 SET(CPACK_GENERATOR "DEB")
-SET(CPACK_DEBIAN_PACKAGE_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR})
+if(NOT CMAKE_BUILD_TYPE)
+    SET(CPACK_DEBIAN_PACKAGE_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR})
+endif()
 SET(CPACK_DEBIAN_PACKAGE_MAINTAINER "Michel Promonet") 
 SET(CPACK_PACKAGE_CONTACT "michel.promonet@free.fr") 
 SET(CPACK_SYSTEM_NAME ${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}-${CMAKE_BUILD_TYPE})