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diff --git a/src/zfs-fuse/main.c b/src/zfs-fuse/main.c
index e8191bc..c57fc01 100644
--- a/src/zfs-fuse/main.c
+++ b/src/zfs-fuse/main.c
@@ -401,8 +401,12 @@ static void read_cfg() {
{
// prepend dashes for short or long options
const char* original = argv[1];
- if ('-'!=*original)
- VERIFY(-1 != asprintf(&argv[1], strlen(original)>1? "--%s" : "-%s", original));
+ int original_len;
+ original_len = strlen(original);
+ if ('-'!=*original) {
+ argv[1] = malloc(original_len + 2);
+ snprintf(argv[1], original_len + 2, strlen(original)>1? "--%s" : "-%s", original);
+ }
// parse
parse_args(argc,argv);
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