diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake
index df9724765ea..5d530412da7 100644
--- a/cmake/QtInternalTargets.cmake
+++ b/cmake/QtInternalTargets.cmake
@@ -152,6 +152,7 @@ if(WIN32)
     target_compile_definitions(PlatformCommonInternal INTERFACE "UNICODE;_UNICODE")
     if(MSVC)
         target_compile_definitions(PlatformCommonInternal INTERFACE
+            "_CRT_SECURE_NO_WARNINGS"
             "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,SHARED_LIBRARY>:_WINDLL>"
         )
     endif()
diff --git a/cmake/QtModuleHelpers.cmake b/cmake/QtModuleHelpers.cmake
index 886e338b205..86408eca8d4 100644
--- a/cmake/QtModuleHelpers.cmake
+++ b/cmake/QtModuleHelpers.cmake
@@ -358,10 +358,6 @@ function(qt_internal_add_module target)
             )
     endif()
 
-    if(MSVC)
-        list(APPEND defines_for_extend_target _CRT_SECURE_NO_WARNINGS)
-    endif()
-
     qt_internal_extend_target("${target}"
         ${header_module}
         SOURCES ${arg_SOURCES}