diff --git a/_studio/mfx_lib/shared/include/mfx_utils_extbuf.h b/_studio/mfx_lib/shared/include/mfx_utils_extbuf.h
index 5c8260bf8..1f9a4cf28 100644
--- a/_studio/mfx_lib/shared/include/mfx_utils_extbuf.h
+++ b/_studio/mfx_lib/shared/include/mfx_utils_extbuf.h
@@ -31,6 +31,7 @@
 #include "mfxenctools-int.h"
 #endif
 
+#include "mfxav1.h"
 
 #ifdef MFX_ENABLE_ENCODE_STATS
 #include "mfxencodestats.h"