diff --git a/src/tools/qtwaylandscanner/CMakeLists.txt b/src/tools/qtwaylandscanner/CMakeLists.txt
index c7b10c2b3e5..20a570bd6cc 100644
--- a/src/tools/qtwaylandscanner/CMakeLists.txt
+++ b/src/tools/qtwaylandscanner/CMakeLists.txt
@@ -11,6 +11,7 @@ qt_internal_add_tool(${target_name}
     SOURCES
         qtwaylandscanner.cpp
 )
+qt_internal_return_unless_building_tools()
 
 #### Keys ignored in scope 1:.:.:qtwaylandscanner.pro:<TRUE>:
 # _OPTION = "host_build"