diff --git a/port/wiced/btstack_config.h b/port/wiced/btstack_config.h
index dc612cd74..12e2fc6ed 100644
--- a/port/wiced/btstack_config.h
+++ b/port/wiced/btstack_config.h
@@ -14,12 +14,12 @@
 #define ENABLE_CLASSIC
 #define ENABLE_LE_PERIPHERAL
 #define ENABLE_LE_CENTRAL
-// #define ENABLE_LE_SECURE_CONNECTIONS
+#define ENABLE_LE_SECURE_CONNECTIONS
 #define ENABLE_LOG_ERROR
 // #define ENABLE_LOG_INFO
 
 // BTstack configuration. buffers, sizes, ...
-#define HCI_ACL_PAYLOAD_SIZE 52
+#define HCI_ACL_PAYLOAD_SIZE 100
 #define MAX_SPP_CONNECTIONS 1
 #define MAX_NR_GATT_CLIENTS 1
 #define MAX_NR_HCI_CONNECTIONS MAX_SPP_CONNECTIONS
diff --git a/port/wiced/wiced.mk b/port/wiced/wiced.mk
index 2b7247307..d8578dd56 100644
--- a/port/wiced/wiced.mk
+++ b/port/wiced/wiced.mk
@@ -8,7 +8,13 @@ endif
 
 NAME := BTstack_for_BCM$(BT_CHIP)$(BT_CHIP_REVISION)
 
-GLOBAL_INCLUDES += . ../../src ../../platform/embedded ../../chipset/bcm ../../../../
+GLOBAL_INCLUDES += \
+	. \
+	../../src \
+	../../platform/embedded \
+	../../chipset/bcm \
+	../../3rd-party/micro-ecc \
+	../../../../
 
 # core BTstack sources
 $(NAME)_SOURCES += \
@@ -43,6 +49,10 @@ $(NAME)_SOURCES += \
 	../../src/l2cap_signaling.c           \
 	../../example/sco_demo_util.c         \
 
+# micro-ecc for LE Secure Connection
+$(NAME)_SOURCES += \
+	../../3rd-party/micro-ecc/uECC.c 				\
+
 # WICED port incl. support for Broadcom chipset
 $(NAME)_SOURCES += \
 	main.c                                     \