diff --git a/lib/cmake/modules/ReflectionGenerator.cmake b/lib/cmake/modules/ReflectionGenerator.cmake
index 78f87bf..caf7f67 100644
--- a/lib/cmake/modules/ReflectionGenerator.cmake
+++ b/lib/cmake/modules/ReflectionGenerator.cmake
@@ -153,6 +153,9 @@ function(add_reflection_generator_invocation)
             VERBATIM
         )
 
+        # prevent Qt's code generator to be executed on the files generated by this code generator
+        set_property(SOURCE "${OUTPUT_FILE}" PROPERTY SKIP_AUTOGEN ON)
+
         # append the output file to lists specified via OUTPUT_LISTS
         if(ARGS_OUTPUT_LISTS)
             foreach(OUTPUT_LIST ${ARGS_OUTPUT_LISTS})