diff --git a/src/gui/server/public-api.lisp b/src/gui/server/public-api.lisp
index 2e7a534..f3990b1 100644
--- a/src/gui/server/public-api.lisp
+++ b/src/gui/server/public-api.lisp
@@ -338,7 +338,7 @@
   t)
 
 (defun gemini-delete-certificate (cache-key)
-  (invalidate-cached-value cache-key)
+  (invalidate-cached-value cache-key))
 
 (defun tour-shuffle ()
   (shuffle-tour *gemini-window*))