1 files changed, 1 insertions, 1 deletions
diff --git a/src/mongo/bson/oid.cpp b/src/mongo/bson/oid.cpp
index 853299d5bfe..e9c6b87eb3a 100644
--- a/src/mongo/bson/oid.cpp
+++ b/src/mongo/bson/oid.cpp
@@ -151,7 +151,7 @@ namespace {
     }
 
     void OID::init(Date_t date, bool max) {
-        setTimestamp(uint32_t(date / 1000));
+        setTimestamp(uint32_t(date.toMillisSinceEpoch() / 1000));
         uint64_t rest = max ? std::numeric_limits<uint64_t>::max() : 0u;
         std::memcpy(_view().view(kInstanceUniqueOffset), &rest,
                     kInstanceUniqueSize + kIncrementSize);