diff --git a/src/tbf_dl.cpp b/src/tbf_dl.cpp
index a0510f6..39a1f33 100644
--- a/src/tbf_dl.cpp
+++ b/src/tbf_dl.cpp
@@ -318,7 +318,8 @@
 			frames = 0xff;
 		if (octets > 0xffffff)
 			octets = 0xffffff;
-		bssgp_tx_llc_discarded(bctx, tlli(), frames, octets);
+		if (bctx)
+			bssgp_tx_llc_discarded(bctx, tlli(), frames, octets);
 	}
 
 	return msg;