diff -r 90ad7324bbbc -r 1a9e6a5c1e79 libidav/utils.c
--- a/libidav/utils.c	Sun Apr 07 17:56:31 2019 +0200
+++ b/libidav/utils.c	Tue Apr 09 18:19:52 2019 +0200
@@ -889,7 +889,7 @@
         dav_hash_update(sha, buf, r);
     }
     
-    char hash[DAV_SHA256_DIGEST_LENGTH];
+    unsigned char hash[DAV_SHA256_DIGEST_LENGTH];
     dav_hash_final(sha, hash);
     free(buf);
     fclose(in);