diff --git a/src/gprs_ms.h b/src/gprs_ms.h
index 5c42c50..8d292f1 100644
--- a/src/gprs_ms.h
+++ b/src/gprs_ms.h
@@ -67,6 +67,8 @@
 
 	uint8_t ta() const;
 	void set_ta(uint8_t ta);
+	uint8_t ms_class() const;
+	void set_ms_class(uint8_t ms_class);
 
 	gprs_llc_queue *llc_queue();
 	const gprs_llc_queue *llc_queue() const;
@@ -108,6 +110,7 @@
 	/* store IMSI for look-up and PCH retransmission */
 	char m_imsi[16];
 	uint8_t m_ta;
+	uint8_t m_ms_class;
 	gprs_llc_queue m_llc_queue;
 
 	bool m_is_idle;
@@ -140,6 +143,11 @@
 	return m_ta;
 }
 
+inline uint8_t GprsMs::ms_class() const
+{
+	return m_ms_class;
+}
+
 inline void GprsMs::set_timeout(unsigned secs)
 {
 	m_delay = secs;