diff --git a/src/include/libplacebo/utils/libav_internal.h b/src/include/libplacebo/utils/libav_internal.h
index 06b151b6..fb36394d 100644
--- a/src/include/libplacebo/utils/libav_internal.h
+++ b/src/include/libplacebo/utils/libav_internal.h
@@ -25,6 +25,7 @@
 
 #include <libplacebo/utils/dolbyvision.h>
 
+#include <libavformat/avformat.h>
 #include <libavutil/hwcontext.h>
 #include <libavutil/hwcontext_drm.h>
 #include <libavutil/imgutils.h>