diff --git a/docs/meson.build b/docs/meson.build
index cfd2406..489658b 100644
--- a/docs/meson.build
+++ b/docs/meson.build
@@ -24,6 +24,7 @@ private_headers = [
   'ppd-driver-balanced.h',
   'ppd-driver-fake.h',
   'ppd-driver-intel-pstate.h',
+  'ppd-driver-placeholder.h',
   'ppd-driver-platform-profile.h',
   'ppd-driver-power-saver.h',
   'ppd-utils.h',