diff --git a/src/core/fiber.c b/src/core/fiber.c
index 82cd87cd..31be7f11 100644
--- a/src/core/fiber.c
+++ b/src/core/fiber.c
@@ -642,7 +642,7 @@ JANET_CORE_FN(cfun_fiber_can_resume,
 }
 
 JANET_CORE_FN(cfun_fiber_last_value,
-              "(fiber/last-value",
+              "(fiber/last-value)",
               "Get the last value returned or signaled from the fiber.") {
     janet_fixarity(argc, 1);
     JanetFiber *fiber = janet_getfiber(argv, 0);