diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index ce8dad057d..bba158629b 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -42,4 +42,6 @@ int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt);
  */
 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt);
 
+int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);
+
 #endif /* AVCODEC_INTERNAL_H */