diff --git a/src/port/meson.build b/src/port/meson.build
index 24416b9bfc..0a16f1c7f5 100644
--- a/src/port/meson.build
+++ b/src/port/meson.build
@@ -192,3 +192,6 @@ endforeach
 pgport_srv = pgport['_srv']
 pgport_static = pgport['']
 pgport_shlib = pgport['_shlib']
+
+# autoconf generates the file there, ensure we get a conflict
+generated_sources_ac += {'src/port': ['pg_config_paths.h']}