diff --git a/libraries/base/common/tb/vhdl/tb_common_adder_tree.vhd b/libraries/base/common/tb/vhdl/tb_common_adder_tree.vhd
index 3fb6c9905cccaf06117eed6580bc6f91cdea4df2..6fa643dd59cb9c572b3ab8764bf0d0d8a442d028 100644
--- a/libraries/base/common/tb/vhdl/tb_common_adder_tree.vhd
+++ b/libraries/base/common/tb/vhdl/tb_common_adder_tree.vhd
@@ -169,6 +169,8 @@ BEGIN
     out_dat => result_expected
   );
   
+  -- Using work.common_adder_tree(recursive) will only invoke the recursive architecture once, because the next recursive level will default to using the last compiled architecture
+  -- Therefore only instatiatiate the DUT once in this tb and use compile order to influence which architecture is used.
   dut : ENTITY work.common_adder_tree  -- uses last compile architecture
   GENERIC MAP (
     g_representation => g_representation,