diff --git a/src/syscfg/devcfg/nrf51cfg.h b/src/syscfg/devcfg/nrf51cfg.h
index e7d9b99b4..0fc41e10e 100644
--- a/src/syscfg/devcfg/nrf51cfg.h
+++ b/src/syscfg/devcfg/nrf51cfg.h
@@ -95,8 +95,19 @@
 #  define MYNEWT_VAL_BLE_TRANSPORT_ACL_COUNT (4)
 # endif
 
-#define MYNEWT_VAL_BLE_LL_CFG_FEAT_LE_2M_PHY (0)
-#define MYNEWT_VAL_BLE_LL_CFG_FEAT_LE_CODED_PHY (0)
+# ifndef MYNEWT_VAL_BLE_TRANSPORT_EVT_DISCARDABLE_COUNT
+#  define MYNEWT_VAL_BLE_TRANSPORT_EVT_DISCARDABLE_COUNT (8)
+# endif
+
+# ifndef MYNEWT_VAL_BLE_MAX_PERIODIC_SYNCS
+#  define MYNEWT_VAL_BLE_MAX_PERIODIC_SYNCS (0)
+# endif
+# ifndef MYNEWT_VAL_BLE_MULTI_ADV_INSTANCES
+#  define MYNEWT_VAL_BLE_MULTI_ADV_INSTANCES (0)
+# endif
+
+# define MYNEWT_VAL_BLE_LL_CFG_FEAT_LE_2M_PHY    (0)
+# define MYNEWT_VAL_BLE_LL_CFG_FEAT_LE_CODED_PHY (0)
 
 #endif /* NRF51 */
 #endif /* _NRF51CFG_H */
diff --git a/src/syscfg/devcfg/nrf52810cfg.h b/src/syscfg/devcfg/nrf52810cfg.h
index 32e61f8b2..b7e4c5465 100644
--- a/src/syscfg/devcfg/nrf52810cfg.h
+++ b/src/syscfg/devcfg/nrf52810cfg.h
@@ -55,6 +55,17 @@
 #  define MYNEWT_VAL_BLE_SM_SC (0)
 # endif
 
+# ifndef MYNEWT_VAL_BLE_TRANSPORT_EVT_DISCARDABLE_COUNT
+#  define MYNEWT_VAL_BLE_TRANSPORT_EVT_DISCARDABLE_COUNT (8)
+# endif
+
+# ifndef MYNEWT_VAL_BLE_MAX_PERIODIC_SYNCS
+#  define MYNEWT_VAL_BLE_MAX_PERIODIC_SYNCS (0)
+# endif
+# ifndef MYNEWT_VAL_BLE_MULTI_ADV_INSTANCES
+#  define MYNEWT_VAL_BLE_MULTI_ADV_INSTANCES (0)
+# endif
+
 #define MYNEWT_VAL_BLE_LL_CFG_FEAT_LE_CODED_PHY (0)
 
 #endif // NRF52810_XXAA