diff --git a/applications/apertif/designs/apertif_unb1_fn_beamformer/revisions/apertif_unb1_fn_beamformer_tp_bg/tc_apertif_unb1_fn_beamformer_tp_bg.py b/applications/apertif/designs/apertif_unb1_fn_beamformer/revisions/apertif_unb1_fn_beamformer_tp_bg/tc_apertif_unb1_fn_beamformer_tp_bg.py
index dab6d4f434052ecd53e3db7d311d12cb96d202ae..6ccf68b008f2cc14cd0792fa004fbb4e20851107 100644
--- a/applications/apertif/designs/apertif_unb1_fn_beamformer/revisions/apertif_unb1_fn_beamformer_tp_bg/tc_apertif_unb1_fn_beamformer_tp_bg.py
+++ b/applications/apertif/designs/apertif_unb1_fn_beamformer/revisions/apertif_unb1_fn_beamformer_tp_bg/tc_apertif_unb1_fn_beamformer_tp_bg.py
@@ -261,9 +261,10 @@ if __name__ == "__main__":
     tc.append_log(3, '')
 
     ss_list = []
-    for i in range(g_wr_chunksize):
-        for j in range(g_rd_chunksize):
-            ss_list.append(i + j*g_nof_weights)
+    for h in range(g_wr_chunksize/c_interleave):
+        for i in range(g_rd_chunksize):
+            for j in range(c_interleave):
+                ss_list.append(h*c_interleave + i*g_nof_weights + j)
             
     if c_ena_pre_transpose:
         ss.write_selects(ss_list)