diff --git a/ext/libav/gstavviddec.c b/ext/libav/gstavviddec.c
index 8530033d45..ec0e34870e 100644
--- a/ext/libav/gstavviddec.c
+++ b/ext/libav/gstavviddec.c
@@ -674,7 +674,7 @@ gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
   GstVideoAlignment align;
   GstAllocator *allocator = NULL;
   gint width, height;
-  gint linesize_align[4];
+  gint linesize_align[AV_NUM_DATA_POINTERS];
   gint i;
   gsize max_align;