diff --git a/src/catch2/internal/catch_decomposer.hpp b/src/catch2/internal/catch_decomposer.hpp
index cd85005d3e..e1f635b6e9 100644
--- a/src/catch2/internal/catch_decomposer.hpp
+++ b/src/catch2/internal/catch_decomposer.hpp
@@ -168,6 +168,9 @@ namespace Catch {
             m_result( result )
         {}
 
+        constexpr ITransientExpression( ITransientExpression const& ) = default;
+        constexpr ITransientExpression& operator=( ITransientExpression const& ) = default;
+
         friend std::ostream& operator<<(std::ostream& out, ITransientExpression const& expr) {
             expr.streamReconstructedExpression(out);
             return out;