diff --git a/example/gen/net/poettering/Calculator/meson.build b/example/gen/net/poettering/Calculator/meson.build
index 6b469e6..e906ab2 100644
--- a/example/gen/net/poettering/Calculator/meson.build
+++ b/example/gen/net/poettering/Calculator/meson.build
@@ -2,7 +2,7 @@
 generated_sources += custom_target(
     'net/poettering/Calculator__cpp'.underscorify(),
     input: [ '../../../../yaml/net/poettering/Calculator.interface.yaml',  ],
-    output: [ 'error.cpp', 'error.hpp', 'server.cpp', 'server.hpp', 'client.hpp',  ],
+    output: [ 'error.cpp', 'error.hpp', 'common.hpp', 'server.cpp', 'server.hpp', 'client.hpp',  ],
     depend_files: sdbusplusplus_depfiles,
     command: [
         sdbuspp_gen_meson_prog, '--command', 'cpp',