diff --git a/libavcodec/indeo2.c b/libavcodec/indeo2.c
index f58804bab3..510f4da01e 100644
--- a/libavcodec/indeo2.c
+++ b/libavcodec/indeo2.c
@@ -162,7 +162,7 @@ static int ir2_decode_frame(AVCodecContext *avctx,
 #endif
     start = 48; /* hardcoded for now */
 
-    init_get_bits(&s->gb, buf + start, buf_size - start);
+    init_get_bits(&s->gb, buf + start, (buf_size - start) * 8);
 
     if (s->decode_delta) { /* intraframe */
         ir2_decode_plane(s, avctx->width, avctx->height,