diff --git a/libraries/base/dp/src/vhdl/dp_stream_pkg.vhd b/libraries/base/dp/src/vhdl/dp_stream_pkg.vhd
index e770813da4e9541b412934ca1c32305324aae4bc..a9782fa140393c7af419f5965e4d334a17499af0 100644
--- a/libraries/base/dp/src/vhdl/dp_stream_pkg.vhd
+++ b/libraries/base/dp/src/vhdl/dp_stream_pkg.vhd
@@ -86,6 +86,7 @@ PACKAGE dp_stream_pkg Is
   CONSTANT c_dp_siso_hold  : t_dp_siso := ('0', '1');
   CONSTANT c_dp_siso_rdy   : t_dp_siso := ('1', '1');
   CONSTANT c_dp_siso_flush : t_dp_siso := ('1', '0');
+  CONSTANT c_dp_sosi_init  : t_dp_sosi := ('0', (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'), '0', '0', '0', (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'));
   CONSTANT c_dp_sosi_rst   : t_dp_sosi := ('0', (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'), '0', '0', '0', (OTHERS=>'0'), (OTHERS=>'0'), (OTHERS=>'0'));
   CONSTANT c_dp_sosi_x     : t_dp_sosi := ('X', (OTHERS=>'X'), (OTHERS=>'X'), (OTHERS=>'X'), (OTHERS=>'X'), 'X', 'X', 'X', (OTHERS=>'X'), (OTHERS=>'X'), (OTHERS=>'X'));