diff --git a/source/extensions/quic_listeners/quiche/platform/quic_mem_slice_impl.cc b/source/extensions/quic_listeners/quiche/platform/quic_mem_slice_impl.cc
index c75f99c0bafbe..903ee1332d04e 100644
--- a/source/extensions/quic_listeners/quiche/platform/quic_mem_slice_impl.cc
+++ b/source/extensions/quic_listeners/quiche/platform/quic_mem_slice_impl.cc
@@ -16,7 +16,7 @@ QuicMemSliceImpl::QuicMemSliceImpl(QuicUniqueBufferPtr buffer, size_t length)
     : fragment_(std::make_unique<Envoy::Buffer::BufferFragmentImpl>(
           buffer.release(), length,
           [](const void* p, size_t, const Envoy::Buffer::BufferFragmentImpl*) {
-            delete static_cast<const char*>(p);
+            delete[] static_cast<const char*>(p);
           })) {
   single_slice_buffer_.addBufferFragment(*fragment_);
   ASSERT(this->length() == length);