diff --git a/src/madness/world/worldgop.h b/src/madness/world/worldgop.h
index 171fe9f7969..e61a24fc880 100644
--- a/src/madness/world/worldgop.h
+++ b/src/madness/world/worldgop.h
@@ -950,7 +950,6 @@ namespace madness {
         /// \return on rank 0 returns the concatenated vector, elsewhere returns an empty vector
         template <typename T>
         std::vector<T> concat0(const std::vector<T>& v, size_t bufsz=1024*1024) {
-            static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable");
             MADNESS_ASSERT(bufsz <= std::numeric_limits<int>::max());
 
             ProcessID parent, child0, child1;