diff --git a/src/corelib/Qt6CoreMacros.cmake b/src/corelib/Qt6CoreMacros.cmake
index 3aed96f6bf5..868461dacab 100644
--- a/src/corelib/Qt6CoreMacros.cmake
+++ b/src/corelib/Qt6CoreMacros.cmake
@@ -1371,7 +1371,7 @@ function(qt6_extract_metatypes target)
         VERBATIM
     )
 
-    if(CMAKE_GENERATOR MATCHES "Unix Makefiles")
+    if(CMAKE_GENERATOR MATCHES " Makefiles")
         # Work around https://gitlab.kitware.com/cmake/cmake/-/issues/19005 to trigger the command
         # that generates ${metatypes_file}.
         add_custom_command(