diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index eeee6a6ae4..ebcdd96508 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -264,7 +264,7 @@ error:
 static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc,
                                        int S)
 {
-    int bit;
+    unsigned bit;
 
     if (s->extra_bits) {
         S <<= s->extra_bits;