diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c
index e3fbaa62c7..5a4d272f78 100644
--- a/libavcodec/mlpdec.c
+++ b/libavcodec/mlpdec.c
@@ -208,7 +208,7 @@ static enum AVChannel thd_channel_layout_extract_channel(uint64_t channel_layout
         return AV_CHAN_NONE;
 
     for (i = 0; i < FF_ARRAY_ELEMS(thd_channel_order); i++)
-        if (channel_layout & (1 << thd_channel_order[i]) && !index--)
+        if (channel_layout & (1ULL << thd_channel_order[i]) && !index--)
             return thd_channel_order[i];
     return AV_CHAN_NONE;
 }