diff --git a/src/osmo_gsm_tester/templates/srsenb_drb.conf.tmpl b/src/osmo_gsm_tester/templates/srsenb_drb.conf.tmpl
index b1c69b7b..0fce9cbf 100644
--- a/src/osmo_gsm_tester/templates/srsenb_drb.conf.tmpl
+++ b/src/osmo_gsm_tester/templates/srsenb_drb.conf.tmpl
@@ -78,7 +78,7 @@ qci_config = (
   rlc_config = {
     ul_am = {
       t_poll_retx = 120;
-      poll_pdu = 64;
+      poll_pdu = 8;
       poll_byte = 750;
       max_retx_thresh = 16;
     };