diff --git a/libavcodec/dpcm.c b/libavcodec/dpcm.c
index 6ea9e2c065..eff6587404 100644
--- a/libavcodec/dpcm.c
+++ b/libavcodec/dpcm.c
@@ -444,7 +444,7 @@ static int dpcm_decode_frame(AVCodecContext *avctx, AVFrame *frame,
             if (n & 0x80)
                 s->sample[idx] = sign_extend((n & 0x7f) << 9, 16);
             else
-                s->sample[idx] += s->scale * wady_table[n & 0x7f];
+                s->sample[idx] += s->scale * (unsigned)wady_table[n & 0x7f];
             *output_samples++ = av_clip_int16(s->sample[idx]);
             idx ^= stereo;
         }