diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c
index 4e43f95..e3c06c0 100644
--- a/libavcodec/eatqi.c
+++ b/libavcodec/eatqi.c
@@ -59,12 +59,15 @@
     return 0;
 }
 
-static void tqi_decode_mb(MpegEncContext *s, DCTELEM (*block)[64])
+static int tqi_decode_mb(MpegEncContext *s, DCTELEM (*block)[64])
 {
     int n;
     s->dsp.clear_blocks(block[0]);
     for (n=0; n<6; n++)
-        ff_mpeg1_decode_block_intra(s, block[n], n);
+        if (ff_mpeg1_decode_block_intra(s, block[n], n) < 0)
+            return -1;
+
+    return 0;
 }
 
 static inline void tqi_idct_put(TqiContext *t, DCTELEM (*block)[64])
@@ -134,7 +137,8 @@
     for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++)
     for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++)
     {
-        tqi_decode_mb(s, t->block);
+        if (tqi_decode_mb(s, t->block) < 0)
+            break;
         tqi_idct_put(t, t->block);
     }