diff --git a/core/autoload/buffers.el b/core/autoload/buffers.el
index 2fd38ff72..7aae88a6f 100644
--- a/core/autoload/buffers.el
+++ b/core/autoload/buffers.el
@@ -126,29 +126,31 @@ If DERIVED-P, test with `derived-mode-p', otherwise use `eq'."
            when (string-match-p pattern (buffer-name buf))
            collect buf))
 
-(defun doom--cycle-real-buffers (&optional n)
+(defun doom--cycle-real-buffers (n)
   "Switch to the next buffer N times (previous, if N < 0), skipping over unreal
 buffers. If there's nothing left, switch to `doom-fallback-buffer'. See
 `doom-real-buffer-p' for what 'real' means."
-  (let ((buffers (delq (current-buffer) (doom-real-buffer-list))))
-    (cond ((or (not buffers)
-               (zerop (% n (1+ (length buffers)))))
-           (switch-to-buffer (doom-fallback-buffer) nil t))
-          ((= (length buffers) 1)
-           (switch-to-buffer (car buffers) nil t))
-          (t
-           ;; Why this instead of switching straight to the Nth buffer in
-           ;; BUFFERS? Because `switch-to-next-buffer' and
-           ;; `switch-to-prev-buffer' properly update buffer list order.
-           (cl-loop with move-func =
-                    (if (> n 0) #'switch-to-next-buffer #'switch-to-prev-buffer)
-                    for i to 20
-                    while (not (memq (current-buffer) buffers))
-                    do
-                    (dotimes (_i (abs n))
-                      (funcall move-func)))))
-    (force-mode-line-update)
-    (current-buffer)))
+  (if (null n)
+      (switch-to-buffer (doom-fallback-buffer) nil t)
+    (let ((buffers (delq (current-buffer) (doom-real-buffer-list))))
+      (cond ((or (not buffers)
+                 (zerop (% n (1+ (length buffers)))))
+             (switch-to-buffer (doom-fallback-buffer) nil t))
+            ((= (length buffers) 1)
+             (switch-to-buffer (car buffers) nil t))
+            (t
+             ;; Why this instead of switching straight to the Nth buffer in
+             ;; BUFFERS? Because `switch-to-next-buffer' and
+             ;; `switch-to-prev-buffer' properly update buffer list order.
+             (cl-loop with move-func =
+                      (if (> n 0) #'switch-to-next-buffer #'switch-to-prev-buffer)
+                      for i to 20
+                      while (not (memq (current-buffer) buffers))
+                      do
+                      (dotimes (_i (abs n))
+                        (funcall move-func)))))))
+  (force-mode-line-update)
+  (current-buffer))
 
 ;;;###autoload
 (defun doom-set-buffer-real (buffer flag)