diff --git a/src/dawn/native/IndirectDrawValidationEncoder.cpp b/src/dawn/native/IndirectDrawValidationEncoder.cpp
index 10fb2e18f27..48412ec7d5d 100644
--- a/src/dawn/native/IndirectDrawValidationEncoder.cpp
+++ b/src/dawn/native/IndirectDrawValidationEncoder.cpp
@@ -534,7 +534,9 @@ MaybeError EncodeIndirectDrawValidationCommands(DeviceBase* device,
             if (currentPass &&
                 reinterpret_cast<uintptr_t>(currentPass->inputIndirectBuffer.get()) ==
                     config.inputIndirectBufferPtr &&
-                currentPass->drawType == config.drawType) {
+                currentPass->drawType == config.drawType &&
+                bool(currentPass->flags & kDuplicateBaseVertexInstance) ==
+                    config.duplicateBaseVertexInstance) {
                 uint64_t nextBatchDataOffset =
                     Align(currentPass->batchDataSize, minStorageBufferOffsetAlignment);
                 uint64_t newPassBatchDataSize = nextBatchDataOffset + newBatch.dataSize;