diff --git a/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp b/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp
index e9f7787..3b4f4a4 100644
--- a/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp
+++ b/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp
@@ -1449,7 +1449,7 @@ Status WiredTigerRecordStore::updateRecord(OperationContext* opCtx,
 }
 
 bool WiredTigerRecordStore::updateWithDamagesSupported() const {
-    return false;
+    return true;
 }
 
 StatusWith<RecordData> WiredTigerRecordStore::updateWithDamages(
@@ -1458,7 +1458,36 @@ StatusWith<RecordData> WiredTigerRecordStore::updateWithDamages(
     const RecordData& oldRec,
     const char* damageSource,
     const mutablebson::DamageVector& damages) {
-    MONGO_UNREACHABLE;
+
+    int nentries = damages.size();
+    mutablebson::DamageVector::const_iterator where = damages.begin();
+    const mutablebson::DamageVector::const_iterator end = damages.end();
+    WT_MODIFY entries[nentries];
+    for (u_int i = 0; where != end; ++i, ++where) {
+       entries[i].data.data = damageSource + where->sourceOffset;
+       entries[i].data.size = where->size;
+       entries[i].offset = where->targetOffset;
+       entries[i].size = where->size;
+    }
+
+    WiredTigerCursor curwrap(_uri, _tableId, true, opCtx);
+    curwrap.assertInActiveTxn();
+    WT_CURSOR* c = curwrap.get();
+    invariant(c);
+    c->set_key(c, _makeKey(id));
+
+    // The test harness calls us with empty damage vectors which WiredTiger doesn't allow.
+    if (nentries == 0)
+       invariantWTOK(WT_OP_CHECK(c->search(c)));
+    else
+       invariantWTOK(WT_OP_CHECK(c->modify(c, entries, nentries)));
+
+    WT_ITEM value;
+    invariantWTOK(c->get_value(c, &value));
+
+    SharedBuffer data = SharedBuffer::allocate(value.size);
+    memcpy(data.get(), value.data, value.size);
+    return RecordData(data, value.size);
 }