diff --git a/src/pipewire/extensions/metadata.h b/src/pipewire/extensions/metadata.h
index db6032ec4..58057c608 100644
--- a/src/pipewire/extensions/metadata.h
+++ b/src/pipewire/extensions/metadata.h
@@ -10,6 +10,9 @@ extern "C" {
 #endif
 
 #include <spa/utils/defs.h>
+#include <spa/utils/hook.h>
+
+#include <errno.h>
 
 /** \defgroup pw_metadata Metadata
  * Metadata interface