diff --git a/libavcodec/loco.c b/libavcodec/loco.c
index e22d280b96..f9655c0bf5 100644
--- a/libavcodec/loco.c
+++ b/libavcodec/loco.c
@@ -129,7 +129,7 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh
                              int stride, const uint8_t *buf, int buf_size, int step)
 {
     RICEContext rc;
-    int val;
+    unsigned val;
     int ret;
     int i, j;