diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c
index b2622ddbd3..87a672845e 100644
--- a/libavcodec/wmalosslessdec.c
+++ b/libavcodec/wmalosslessdec.c
@@ -675,7 +675,7 @@ static void mclms_predict(WmallDecodeCtx *s, int icoef, int *pred)
         for (i = 0; i < ich; i++)
             pred[ich] += s->channel_residues[i][icoef] *
                          s->mclms_coeffs_cur[i + num_channels * ich];
-        pred[ich] += (1 << s->mclms_scaling) >> 1;
+        pred[ich] += (1U << s->mclms_scaling) >> 1;
         pred[ich] >>= s->mclms_scaling;
         s->channel_residues[ich][icoef] += (unsigned)pred[ich];
     }