diff --git a/libavcodec/8svx.c b/libavcodec/8svx.c
index 1b03ba1d4e..c034dd6974 100644
--- a/libavcodec/8svx.c
+++ b/libavcodec/8svx.c
@@ -74,9 +74,9 @@ static int delta_decode(int8_t *dst, const uint8_t *src, int src_size,
 
     while (n--) {
         uint8_t d = *src++;
-        val = av_clip(val + table[d & 0x0f], -127, 128);
+        val = av_clip(val + table[d & 0x0f], -128, 127);
         *dst++ = val;
-        val = av_clip(val + table[d >> 4]  , -127, 128);
+        val = av_clip(val + table[d >> 4]  , -128, 127);
         *dst++ = val;
     }