diff --git a/openbsc/include/openbsc/common_cs.h b/openbsc/include/openbsc/common_cs.h
index 8549a83..172d6e6 100644
--- a/openbsc/include/openbsc/common_cs.h
+++ b/openbsc/include/openbsc/common_cs.h
@@ -7,6 +7,14 @@
 
 typedef int (*mncc_recv_cb_t)(struct gsm_network *, struct msgb *);
 
+#define MAX_A5_KEY_LEN	(128/8)
+
+struct gsm_encr {
+	uint8_t alg_id;
+	uint8_t key_len;
+	uint8_t key[MAX_A5_KEY_LEN];
+};
+
 struct gsm_network *gsm_network_init(void *ctx,
 				     uint16_t country_code,
 				     uint16_t network_code,
diff --git a/openbsc/include/openbsc/gsm_data_shared.h b/openbsc/include/openbsc/gsm_data_shared.h
index 97fde83..af79485 100644
--- a/openbsc/include/openbsc/gsm_data_shared.h
+++ b/openbsc/include/openbsc/gsm_data_shared.h
@@ -24,6 +24,8 @@
 #include <osmocom/gsm/lapdm.h>
 #endif
 
+#include <openbsc/common_cs.h>
+
 struct osmo_bsc_data;
 
 struct osmo_bsc_sccp_con;
@@ -117,7 +119,6 @@
 	struct osmo_fsm_inst *fsm;
 };
 
-#define MAX_A5_KEY_LEN	(128/8)
 #define A38_XOR_MIN_KEY_LEN	12
 #define A38_XOR_MAX_KEY_LEN	16
 #define A38_COMP128_KEY_LEN	16
@@ -219,11 +220,7 @@
 	uint8_t bs_power;
 	uint8_t ms_power;
 	/* Encryption information */
-	struct {
-		uint8_t alg_id;
-		uint8_t key_len;
-		uint8_t key[MAX_A5_KEY_LEN];
-	} encr;
+	struct gsm_encr encr;
 
 	/* AMR bits */
 	uint8_t mr_ms_lv[7];