diff --git a/plugins/linux-pipewire/pipewire.c b/plugins/linux-pipewire/pipewire.c
index c11fa33e9..69eb27d1b 100644
--- a/plugins/linux-pipewire/pipewire.c
+++ b/plugins/linux-pipewire/pipewire.c
@@ -52,6 +52,9 @@ enum spa_meta_videotransform_value {
 
 #define SPA_META_VideoTransform 8
 
+struct spa_meta_videotransform {
+	uint32_t transform; /**< orientation transformation that was applied to the buffer */
+};
 #endif
 
 #define CURSOR_META_SIZE(width, height)                                    \