diff --git a/src/encoding.h b/src/encoding.h
index e7046e2..665bd77 100644
--- a/src/encoding.h
+++ b/src/encoding.h
@@ -78,8 +78,8 @@
 
 	static void encode_rbb(const char *show_rbb, uint8_t *rbb);
 
-	static void write_packet_access_reject(
-		bitvec * dest, uint32_t tlli);
+	static void write_packet_access_reject(bitvec * dest, uint32_t tlli,
+					       unsigned long t3172_ms);
 
 	static void write_packet_uplink_ack(
 			bitvec * dest, struct gprs_rlcmac_ul_tbf *tbf, bool is_final,