diff --git a/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/mmm_apertif_unb1_correlator.vhd b/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/mmm_apertif_unb1_correlator.vhd
index 79ada5d629ea6de6f6c23e3baa99274e00214099..ec122718139cb62276a9ac4114c4ed6585ec9e66 100644
--- a/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/mmm_apertif_unb1_correlator.vhd
+++ b/applications/apertif/designs/apertif_unb1_correlator/src/vhdl/mmm_apertif_unb1_correlator.vhd
@@ -45,7 +45,7 @@ ENTITY mmm_apertif_unb1_correlator IS
     g_sim_node_nr   : NATURAL := 0;
     g_wpfb          : t_wpfb;
     g_hdr_field_arr : t_common_field_arr; 
-    g_use_qsys      : BOOLEAN := FALSE
+    g_use_qsys      : BOOLEAN := TRUE 
   );
   PORT (
     xo_clk                         : IN  STD_LOGIC;