diff --git a/libraries/base/dp/src/vhdl/dp_fifo_dc_arr.vhd b/libraries/base/dp/src/vhdl/dp_fifo_dc_arr.vhd
index 5bc9dffb7f286cb79db7b3d6c6994c6cd236657c..5a6d2b1441b06c503b019b891732c203a0c3c30e 100644
--- a/libraries/base/dp/src/vhdl/dp_fifo_dc_arr.vhd
+++ b/libraries/base/dp/src/vhdl/dp_fifo_dc_arr.vhd
@@ -68,7 +68,7 @@ entity dp_fifo_dc_arr is
     -- ST sink
     snk_out_arr : out t_dp_siso_arr(g_nof_streams - 1 downto 0);
     snk_in_arr  : in  t_dp_sosi_arr(g_nof_streams - 1 downto 0);
-    in_aux      : in  std_logic_vector(g_aux_w - 1 downto 0);
+    in_aux      : in  std_logic_vector(g_aux_w - 1 downto 0) := (others => '0');
     -- ST source
     src_in_arr  : in  t_dp_siso_arr(g_nof_streams - 1 downto 0) := (others => c_dp_siso_rdy);
     src_out_arr : out t_dp_sosi_arr(g_nof_streams - 1 downto 0);