diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 72fbb841a4..3da0791ba3 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -294,7 +294,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
         break;
     case AV_CODEC_ID_ADPCM_PSXC:
         max_channels = 8;
-        if (avctx->ch_layout.nb_channels <= 0)
+        if (avctx->ch_layout.nb_channels <= 0 || avctx->block_align <= 0)
             return AVERROR_INVALIDDATA;
         break;
     case AV_CODEC_ID_ADPCM_IMA_DAT4: