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-rw-r--r--validator/val_sigcrypt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/validator/val_sigcrypt.c b/validator/val_sigcrypt.c
index 33d206de8d7f2..de730f681893b 100644
--- a/validator/val_sigcrypt.c
+++ b/validator/val_sigcrypt.c
@@ -1343,7 +1343,7 @@ adjust_ttl(struct val_env* ve, uint32_t unow,
if(ve->date_override) {
now = ve->date_override;
} else now = (int32_t)unow;
- expittl = expi - now;
+ expittl = (int32_t)((uint32_t)expi - (uint32_t)now);
/* so now:
* d->ttl: rrset ttl read from message or cache. May be reduced