--- src/include/cppduals/duals/dual.orig	2025-01-11 12:35:18 UTC
+++ src/include/cppduals/duals/dual
@@ -439,10 +439,6 @@ struct is_arithmetic<duals::dual<T>> : is_arithmetic<T
 
 #endif // CPPDUALS_ENABLE_IS_ARITHMETIC
 
-/// Duals are compound types.
-template <class T>
-struct is_compound<duals::dual<T>> : true_type {};
-
 // Modification of std::numeric_limits<> per
 // C++03 17.4.3.1/1, and C++11 18.3.2.3/1.
 template <class T>