diff --git a/libavcodec/wavpackenc.c b/libavcodec/wavpackenc.c
index 66ebf2fa3c..5b8973c5c7 100644
--- a/libavcodec/wavpackenc.c
+++ b/libavcodec/wavpackenc.c
@@ -638,7 +638,7 @@ static uint32_t log2sample(uint32_t v, int limit, uint32_t *result)
 
     if ((v += v >> 9) < (1 << 8)) {
         dbits = nbits_table[v];
-        result += (dbits << 8) + wp_log2_table[(v << (9 - dbits)) & 0xff];
+        *result += (dbits << 8) + wp_log2_table[(v << (9 - dbits)) & 0xff];
     } else {
         if (v < (1L << 16))
             dbits = nbits_table[v >> 8] + 8;
@@ -647,7 +647,7 @@ static uint32_t log2sample(uint32_t v, int limit, uint32_t *result)
         else
             dbits = nbits_table[v >> 24] + 24;
 
-        result += dbits = (dbits << 8) + wp_log2_table[(v >> (dbits - 9)) & 0xff];
+        *result += dbits = (dbits << 8) + wp_log2_table[(v >> (dbits - 9)) & 0xff];
 
         if (limit && dbits >= limit)
             return 1;