diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 1a659a281..735a36a92 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -6743,12 +6743,6 @@ private function f_test_l2_fill_frames(boolean dtxd) runs on ConnHdlr {
 		}
 
 		if (dtxd) {
-			if (not match(g_chan_nr, t_RslChanNr_Bm(?))) {
-				T.stop;
-				f_rsl_chan_deact();
-				f_L1CTL_DM_REL_REQ(L1CTL, g_chan_nr);
-				Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Received fill frame on non-TCH/F channel; DTX is only allowed on TCH/F!");
-			}
 			if (fn > first_fn + frame_dtx_tchf_mod) {
 				T.stop;
 				f_rsl_chan_deact();