diff --git a/src/common/thread.h b/src/common/thread.h
index 278376cac..e84db99a0 100644
--- a/src/common/thread.h
+++ b/src/common/thread.h
@@ -82,7 +82,7 @@ public:
 private:
     std::condition_variable condvar;
     std::mutex mutex;
-    const std::size_t count;
+    std::size_t count;
     std::size_t waiting = 0;
     std::size_t generation = 0; // Incremented once each time the barrier is used
 };