diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1d6399586..e65cb193d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -726,6 +726,9 @@ if (NOT WITHOUT_TESTAPPS AND NOT WITHOUT_SERVER)
 			COMPONENT examples)
 endif()
 
+# build subdir is not part of sources
+set(CPACK_SOURCE_IGNORE_FILES $(CPACK_SOURCE_IGNORE_FILES) ".git" "build" "tgz" "tar.gz")
+
 # Most people are more used to "make dist" compared to "make package_source"
 add_custom_target(dist COMMAND ${CMAKE_MAKE_PROGRAM} package_source)