diff --git a/common/auth.h b/common/auth.h
line changes: +5/-5
index 651813f..24fd293
--- a/common/auth.h
+++ b/common/auth.h

@@ -12,11 +12,11 @@
 #define SCRYPT_r 8
 #define SCRYPT_p 1
 
-int auth_set_password(const char *, const char *);
-int auth_get_password_version(const char *);
-int auth_get_password(const char *, char *);
-int auth_get_salt(const char *, char *);
-int auth_check_password(const char *, const char *);
+int auth_set_password(const char *username, const char *password);
+int auth_get_password_version(const char *username);
+int auth_get_password(const char *username, char *password);
+int auth_get_salt(const char *username, char *salt);
+int auth_check_password(const char *username, const char *password);
 char * auth_login(const char *username, const char *password);
 int auth_logout(const char *username, const char *token);
 int auth_check_token(const char *username, const char *given_token);