diff --git a/cmake/QtDbusHelpers.cmake b/cmake/QtDbusHelpers.cmake
index 8b972adc923..95f1f9aa131 100644
--- a/cmake/QtDbusHelpers.cmake
+++ b/cmake/QtDbusHelpers.cmake
@@ -44,12 +44,18 @@ function(qt_create_qdbusxml2cpp_command target infile)
     set(header_file "${file_name}.h")
     set(source_file "${file_name}.cpp")
 
-    add_custom_command(OUTPUT "${header_file}" "${source_file}"
+    set(header_file_full "${CMAKE_CURRENT_BINARY_DIR}/${file_name}.h")
+    set(source_file_full "${CMAKE_CURRENT_BINARY_DIR}/${file_name}.cpp")
+
+    add_custom_command(OUTPUT "${header_file_full}" "${source_file_full}"
                        COMMAND ${QT_CMAKE_EXPORT_NAMESPACE}::qdbusxml2cpp ${arg_FLAGS} "${option}"
                                "${header_file}:${source_file}" "${absolute_in_file_path}"
                        DEPENDS "${absolute_in_file_path}" ${QT_CMAKE_EXPORT_NAMESPACE}::qdbusxml2cpp
                        WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
                        VERBATIM)
 
-    target_sources("${target}" PRIVATE "${header_file}" "${source_file}")
+    target_sources("${target}" PRIVATE
+        "${header_file_full}"
+        "${source_file_full}"
+    )
 endfunction()