diff --git a/boot/zephyr/keys.c b/boot/zephyr/keys.c
index 7214748..b7a9edf 100644
--- a/boot/zephyr/keys.c
+++ b/boot/zephyr/keys.c
@@ -186,15 +186,8 @@
     .len = &enc_priv_key_len,
 };
 #elif defined(MCUBOOT_ENCRYPT_EC256)
-unsigned char enc_priv_key[] = {
-  0x30, 0x81, 0x43, 0x02, 0x01, 0x00, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86,
-  0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
-  0x03, 0x01, 0x07, 0x04, 0x29, 0x30, 0x27, 0x02, 0x01, 0x01, 0x04, 0x20,
-  0xf6, 0x1e, 0x51, 0x9d, 0xf8, 0xfa, 0xdd, 0xa1, 0xb7, 0xd9, 0xa9, 0x64,
-  0x64, 0x3b, 0x54, 0xd0, 0x3d, 0xd0, 0x1f, 0xe5, 0x78, 0xd9, 0x17, 0x98,
-  0xa5, 0x28, 0xca, 0xcc, 0x6b, 0x67, 0x9e, 0x06, 0xa1, 0x44,
-};
-static unsigned int enc_priv_key_len = 70;
+extern const unsigned char enc_priv_key[];
+extern unsigned int enc_priv_key_len;
 const struct bootutil_key bootutil_enc_key = {
     .key = enc_priv_key,
     .len = &enc_priv_key_len,