diff --git a/GNUmakefile b/GNUmakefile
index de55a68..b0a6cf7 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -183,6 +183,7 @@ adcrush_SOURCES := src/tools/adcrush.c
 admin_SOURCES := src/tools/admin.c
 
 autotest_SOURCES := \
+		autotest/test_credentials.tcc \
 		autotest/test_eventqueue.tcc \
 		autotest/test_hub.tcc \
 		autotest/test_inf.tcc \
diff --git a/autotest/test_credentials.tcc b/autotest/test_credentials.tcc
new file mode 100644
index 0000000..6b31304
--- /dev/null
+++ b/autotest/test_credentials.tcc
@@ -0,0 +1,24 @@
+#include <uhub.h>
+
+EXO_TEST(cred_to_string_1, { return !strcmp(auth_cred_to_string(auth_cred_none),     "none");     });
+EXO_TEST(cred_to_string_2, { return !strcmp(auth_cred_to_string(auth_cred_bot),      "bot");      });
+EXO_TEST(cred_to_string_3, { return !strcmp(auth_cred_to_string(auth_cred_guest),    "guest");    });
+EXO_TEST(cred_to_string_4, { return !strcmp(auth_cred_to_string(auth_cred_user),     "user");     });
+EXO_TEST(cred_to_string_5, { return !strcmp(auth_cred_to_string(auth_cred_operator), "operator"); });
+EXO_TEST(cred_to_string_6, { return !strcmp(auth_cred_to_string(auth_cred_super),    "super");    });
+EXO_TEST(cred_to_string_7, { return !strcmp(auth_cred_to_string(auth_cred_link),     "link");     });
+EXO_TEST(cred_to_string_8, { return !strcmp(auth_cred_to_string(auth_cred_admin),    "admin");    });
+
+#define CRED_FROM_STRING(STR, EXPECT) enum auth_credentials cred; return auth_string_to_cred(STR, &cred) && cred == EXPECT;
+
+EXO_TEST(cred_from_string_1,  { CRED_FROM_STRING("none",     auth_cred_none);     });
+EXO_TEST(cred_from_string_2,  { CRED_FROM_STRING("bot",      auth_cred_bot);      });
+EXO_TEST(cred_from_string_3,  { CRED_FROM_STRING("guest",    auth_cred_guest);    });
+EXO_TEST(cred_from_string_4,  { CRED_FROM_STRING("user",     auth_cred_user);     });
+EXO_TEST(cred_from_string_5,  { CRED_FROM_STRING("reg",      auth_cred_user);     });
+EXO_TEST(cred_from_string_6,  { CRED_FROM_STRING("operator", auth_cred_operator); });
+EXO_TEST(cred_from_string_7,  { CRED_FROM_STRING("op",       auth_cred_operator); });
+EXO_TEST(cred_from_string_8,  { CRED_FROM_STRING("super",    auth_cred_super);    });
+EXO_TEST(cred_from_string_9,  { CRED_FROM_STRING("link",     auth_cred_link);     });
+EXO_TEST(cred_from_string_10, { CRED_FROM_STRING("admin",    auth_cred_admin);    });
+
diff --git a/src/util/credentials.c b/src/util/credentials.c
index b8d6faf..46ce076 100644
--- a/src/util/credentials.c
+++ b/src/util/credentials.c
@@ -92,6 +92,7 @@ int auth_string_to_cred(const char* str, enum auth_credentials* out)
 			return 0;
 
 		case 4:
+			if (!strcasecmp(str, "none")) { *out = auth_cred_none; return 1; }
 			if (!strcasecmp(str, "user")) { *out = auth_cred_user; return 1; }
 			if (!strcasecmp(str, "link")) { *out = auth_cred_link; return 1; }
 			return 0;