diff --git a/contrib/pzstd/Pzstd.cpp b/contrib/pzstd/Pzstd.cpp
index fceb49a7c..5dd84124d 100644
--- a/contrib/pzstd/Pzstd.cpp
+++ b/contrib/pzstd/Pzstd.cpp
@@ -61,7 +61,7 @@ static size_t handleOneInput(const Options &options,
   auto inputSize = fileSizeOrZero(inputFile);
   // WorkQueue outlives ThreadPool so in the case of error we are certain
   // we don't accidently try to call push() on it after it is destroyed.
-  WorkQueue<std::shared_ptr<BufferWorkQueue>> outs{2 * options.numThreads};
+  WorkQueue<std::shared_ptr<BufferWorkQueue>> outs{options.numThreads + 1};
   size_t bytesWritten;
   {
     // Initialize the thread pool with numThreads + 1