diff --git a/C/c4Index.cc b/C/c4Index.cc
index 03a38a955..cb55921f3 100644
--- a/C/c4Index.cc
+++ b/C/c4Index.cc
@@ -67,7 +67,7 @@ C4IndexUpdater::~C4IndexUpdater() = default;
 
 size_t C4IndexUpdater::count() const {
     if ( hasFinished() ) {
-        WarnError("C4IndexUpdater::count() called on finished updater.");
+        Warn("C4IndexUpdater::count() called on finished updater.");
         return 0;
     }
     return _update->count();
@@ -75,21 +75,24 @@ size_t C4IndexUpdater::count() const {
 
 FLValue C4IndexUpdater::valueAt(size_t i) const {
     if ( hasFinished() ) {
-        litecore::error::_throw(litecore::error::NotOpen, "C4IndexUpdater::valueAt() called on finished updater.");
+        Warn("C4IndexUpdater::valueAt() called on finished updater.");
+        return FLValue{};
     }
     return _update->valueAt(i);
 }
 
 void C4IndexUpdater::setVectorAt(size_t i, const float* vector, size_t dimension) {
     if ( hasFinished() ) {
-        litecore::error::_throw(litecore::error::NotOpen, "C4IndexUpdater::setVectorAt() called on finished updater.");
+        Warn("C4IndexUpdater::setVectorAt() called on finished updater.");
+        return;
     }
     _update->setVectorAt(i, vector, dimension);
 }
 
 void C4IndexUpdater::skipVectorAt(size_t i) {
     if ( hasFinished() ) {
-        litecore::error::_throw(litecore::error::NotOpen, "C4IndexUpdater::SkipVectorAt() called on finished updater.");
+        Warn("C4IndexUpdater::SkipVectorAt() called on finished updater.");
+        return;
     }
     return _update->skipVectorAt(i);
 }
diff --git a/LiteCore/tests/LazyVectorAPITest.cc b/LiteCore/tests/LazyVectorAPITest.cc
index ed4502d83..e161c5aff 100644
--- a/LiteCore/tests/LazyVectorAPITest.cc
+++ b/LiteCore/tests/LazyVectorAPITest.cc
@@ -667,12 +667,11 @@ TEST_CASE_METHOD(LazyVectorAPITest, "IndexUpdater Call After Already Finished",
     // c4indexupdater_setVectorAt after finished
     err.code  = 0;
     auto succ = c4indexupdater_setVectorAt(updater, 0, vectors.data(), 300, &err);
-    CHECK(!succ);
-    CHECK(err.code == kC4ErrorNotOpen);
+    CHECK(succ);
 
     // c4indexupdater_skipVectorAt after finished
     succ = c4indexupdater_skipVectorAt(updater, 0);
-    CHECK(!succ);
+    CHECK(succ);
 
     c4indexupdater_release(updater);
     c4index_release(index);