diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 32907f3815..8183a1068f 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -323,7 +323,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
     }
 
     if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
-        w_align = FFMAX(w_align, 8);
+        w_align = FFMAX(w_align, 16);
     }
 
     *width  = FFALIGN(*width, w_align);