diff --git a/cmake/QtModuleHelpers.cmake b/cmake/QtModuleHelpers.cmake
index 1a482ff81bc..2c03917f328 100644
--- a/cmake/QtModuleHelpers.cmake
+++ b/cmake/QtModuleHelpers.cmake
@@ -341,6 +341,10 @@ 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}
diff --git a/src/tools/bootstrap/CMakeLists.txt b/src/tools/bootstrap/CMakeLists.txt
index 3cbeae6dc17..218d634683b 100644
--- a/src/tools/bootstrap/CMakeLists.txt
+++ b/src/tools/bootstrap/CMakeLists.txt
@@ -268,4 +268,9 @@ set_target_properties(Bootstrap PROPERTIES AUTOMOC OFF AUTOUIC OFF AUTORCC OFF)
 qt_internal_add_target_aliases(Bootstrap)
 qt_set_msvc_cplusplus_options(Bootstrap PUBLIC)
 qt_internal_apply_intel_cet(Bootstrap PUBLIC)
+
+qt_internal_extend_target(Bootstrap CONDITION MSVC
+    DEFINES
+        _CRT_SECURE_NO_WARNINGS
+)
 # special case end