diff --git a/include/zephyr/bluetooth/conn.h b/include/zephyr/bluetooth/conn.h
index 5ef36281726..83b87588c08 100644
--- a/include/zephyr/bluetooth/conn.h
+++ b/include/zephyr/bluetooth/conn.h
@@ -410,7 +410,7 @@ struct bt_conn_le_cs_capabilities {
 
 /** Remote FAE Table for LE connections supporting CS */
 struct bt_conn_le_cs_fae_table {
-	uint8_t *remote_fae_table;
+	int8_t *remote_fae_table;
 };
 
 /** Channel sounding main mode */
diff --git a/include/zephyr/bluetooth/cs.h b/include/zephyr/bluetooth/cs.h
index aaa410da2d2..2c661c09c57 100644
--- a/include/zephyr/bluetooth/cs.h
+++ b/include/zephyr/bluetooth/cs.h
@@ -886,7 +886,7 @@ int bt_le_cs_write_cached_remote_supported_capabilities(
  *
  * @return Zero on success or (negative) error code on failure.
  */
-int bt_le_cs_write_cached_remote_fae_table(struct bt_conn *conn, uint8_t remote_fae_table[72]);
+int bt_le_cs_write_cached_remote_fae_table(struct bt_conn *conn, int8_t remote_fae_table[72]);
 
 #ifdef __cplusplus
 }
diff --git a/include/zephyr/bluetooth/hci_types.h b/include/zephyr/bluetooth/hci_types.h
index 08be96bd2ff..15bc303bf9e 100644
--- a/include/zephyr/bluetooth/hci_types.h
+++ b/include/zephyr/bluetooth/hci_types.h
@@ -2500,7 +2500,7 @@ struct bt_hci_cp_le_read_remote_fae_table {
 
 struct bt_hci_cp_le_write_cached_remote_fae_table {
 	uint16_t handle;
-	uint8_t remote_fae_table[72];
+	int8_t remote_fae_table[72];
 } __packed;
 
 #define BT_HCI_OP_LE_CS_SET_CHANNEL_CLASSIFICATION BT_OP(BT_OGF_LE, 0x0092) /* 0x2092 */
@@ -3547,7 +3547,7 @@ struct bt_hci_evt_le_cs_read_remote_supported_capabilities_complete {
 struct bt_hci_evt_le_cs_read_remote_fae_table_complete {
 	uint8_t status;
 	uint16_t conn_handle;
-	uint8_t remote_fae_table[72];
+	int8_t remote_fae_table[72];
 } __packed;
 
 #define BT_HCI_LE_CS_CONFIG_ACTION_REMOVED 0x00
diff --git a/subsys/bluetooth/host/cs.c b/subsys/bluetooth/host/cs.c
index c11f262b5d2..03cc3a8e95f 100644
--- a/subsys/bluetooth/host/cs.c
+++ b/subsys/bluetooth/host/cs.c
@@ -1171,7 +1171,7 @@ int bt_le_cs_write_cached_remote_supported_capabilities(
 				    NULL);
 }
 
-int bt_le_cs_write_cached_remote_fae_table(struct bt_conn *conn, uint8_t remote_fae_table[72])
+int bt_le_cs_write_cached_remote_fae_table(struct bt_conn *conn, int8_t remote_fae_table[72])
 {
 	struct bt_hci_cp_le_write_cached_remote_fae_table *cp;
 	struct net_buf *buf;