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-rw-r--r--src/libutil/hash.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libutil/hash.cc b/src/libutil/hash.cc
index 9f4afd93c2fc..fa1bb5d97183 100644
--- a/src/libutil/hash.cc
+++ b/src/libutil/hash.cc
@@ -224,7 +224,7 @@ static void start(HashType ht, Ctx & ctx)
 
 
 static void update(HashType ht, Ctx & ctx,
-    const unsigned char * bytes, unsigned int len)
+    const unsigned char * bytes, size_t len)
 {
     if (ht == htMD5) MD5_Update(&ctx.md5, bytes, len);
     else if (ht == htSHA1) SHA1_Update(&ctx.sha1, bytes, len);