diff --git a/src/tree/gpu_hist/evaluate_splits.cu b/src/tree/gpu_hist/evaluate_splits.cu
index 55762ff78..8e8023ac7 100644
--- a/src/tree/gpu_hist/evaluate_splits.cu
+++ b/src/tree/gpu_hist/evaluate_splits.cu
@@ -507,7 +507,7 @@ GPUExpandEntry GPUHistEvaluator::EvaluateSingleSplit(Context const *ctx, Evaluat
                        shared_inputs, dh::ToSpan(out_entries));
   GPUExpandEntry root_entry;
 
-  dh::safe_cuda(cudaMemcpy(&root_entry, out_entries.data().get(), sizeof(GPUExpandEntry),
+  dh::safe_cuda(cudaMemcpyAsync(&root_entry, out_entries.data().get(), sizeof(GPUExpandEntry),
                                 cudaMemcpyDeviceToHost));
   return root_entry;
 }