diff --git a/libavcodec/loco.c b/libavcodec/loco.c
index d0cedf577d..25dd1575ba 100644
--- a/libavcodec/loco.c
+++ b/libavcodec/loco.c
@@ -131,7 +131,7 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh
                              int stride, const uint8_t *buf, int buf_size)
 {
     RICEContext rc;
-    int val;
+    unsigned val;
     int ret;
     int i, j;