diff --git a/org-ql-agenda.el b/org-ql-agenda.el
index 54644a1..be44798 100644
--- a/org-ql-agenda.el
+++ b/org-ql-agenda.el
@@ -296,10 +296,10 @@ the `match' item in the custom command form."
          (query-formatted (propertize (org-ql-agenda--font-lock-string 'emacs-lisp-mode query-formatted)
                                       'help-echo query-formatted))
          (query-width (length query-formatted))
-         (available-width (- (window-width)
-                             (length "In: ")
-                             (length "Query: ")
-                             query-width 4))
+         (available-width (max 0 (- (window-width)
+                                    (length "In: ")
+                                    (length "Query: ")
+                                    query-width 4)))
          (buffers-files-formatted (format "%S" buffers-files))
          (buffers-files-formatted (propertize (->> buffers-files-formatted
                                                    (org-ql-agenda--font-lock-string 'emacs-lisp-mode)