diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 73beb5050e..b99a21002c 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -140,8 +140,8 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
         break;
     case AV_CODEC_ID_ADPCM_IMA_APC:
         if (avctx->extradata && avctx->extradata_size >= 8) {
-            c->status[0].predictor = AV_RL32(avctx->extradata);
-            c->status[1].predictor = AV_RL32(avctx->extradata + 4);
+            c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata    ), 18);
+            c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18);
         }
         break;
     case AV_CODEC_ID_ADPCM_IMA_WS: