extern on function yk_write_ndef()

diff --git a/ykcore/ykcore.h b/ykcore/ykcore.h
index 79069f8d0a7f80509a3d6002147a128741a14373..74f9bb00a30b797394121a0a64ef5a2524a96845 100644 (file)
--- a/ykcore/ykcore.h
+++ b/ykcore/ykcore.h
@@ -116,7 +116,7 @@ extern int yk_write_command(YK_KEY *k, YK_CONFIG *cfg, uint8_t command,
 extern int yk_write_config(YK_KEY *k, YK_CONFIG *cfg, int confnum,
                           unsigned char *acc_code);
 /* writes the given ndef to the key. */
-int yk_write_ndef(YK_KEY *yk, YK_NDEF *ndef);
+extern int yk_write_ndef(YK_KEY *yk, YK_NDEF *ndef);
 /* Write something to the YubiKey (a command that is). */
 extern int yk_write_to_key(YK_KEY *yk, uint8_t slot, const void *buf, int bufcount);
 /* Do a challenge-response round with the key. */