diff --git a/src/tbf.h b/src/tbf.h
index f3487c6..d23cf93 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -177,6 +177,7 @@
 
 	enum gprs_rlcmac_tbf_poll_state poll_state;
 	uint32_t poll_fn; /* frame number to poll */
+	uint8_t poll_ts; /* TS to poll */
 
 	gprs_rlc m_rlc;