diff --git a/src/corelib/Qt6CoreMacros.cmake b/src/corelib/Qt6CoreMacros.cmake
index f8d532f579c..5f1937cc7ca 100644
--- a/src/corelib/Qt6CoreMacros.cmake
+++ b/src/corelib/Qt6CoreMacros.cmake
@@ -1206,7 +1206,7 @@ function(_qt_internal_generate_win32_rc_file target)
     endif()
 
     if(MSVC)
-        set(extra_rc_flags "/c65001 /DWIN32 /nologo")
+        set(extra_rc_flags "-c65001 -DWIN32 -nologo")
     else()
         set(extra_rc_flags)
     endif()