diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c
index fb196ac941..6d913f3114 100644
--- a/libavcodec/alsdec.c
+++ b/libavcodec/alsdec.c
@@ -724,7 +724,7 @@ static int decode_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
     unsigned int block_length = bd->block_length;
     unsigned int smp = 0;
     unsigned int k;
-    unsigned int opt_order    = bd->opt_order;
+    int opt_order             = bd->opt_order;
     int sb;
     int64_t y;
     int32_t *quant_cof        = bd->quant_cof;