diff --git a/src/gprs_pcu.h b/src/gprs_pcu.h
index 4920966..d6d2dca 100644
--- a/src/gprs_pcu.h
+++ b/src/gprs_pcu.h
@@ -75,6 +75,7 @@
 		uint8_t max_cs_dl, max_cs_ul;
 		uint8_t max_mcs_dl, max_mcs_ul;
 		uint8_t force_two_phase;
+		uint8_t alpha, gamma;
 	} vty;
 
 	struct gsmtap_inst *gsmtap;