diff --git a/applications/apertif/designs/apertif_unb1_correlator/mmm.cfg b/applications/apertif/designs/apertif_unb1_correlator/mmm.cfg
index 8f96a565e961fb52a36dd246d2c4d786b503be35..81b5415828f10aa30f6dfc25f34e8000a4369fad 100644
--- a/applications/apertif/designs/apertif_unb1_correlator/mmm.cfg
+++ b/applications/apertif/designs/apertif_unb1_correlator/mmm.cfg
@@ -31,7 +31,8 @@ custom_peripherals =
     ram_diag_data_buffer_proc        12  3
     ram_st_sst                       12  8
     reg_diag_bg_proc                  1  3    
-    ram_diag_bg_proc                 12  7        
+    ram_diag_bg_proc                 12  7  
+    reg_dp_xonoff_output              1  1
 
 input_clks = mm_clk