diff --git a/gnucash/gnome-utils/gnc-main-window.cpp b/gnucash/gnome-utils/gnc-main-window.cpp
index 9af1c68b83..0e1b0970f3 100644
--- a/gnucash/gnome-utils/gnc-main-window.cpp
+++ b/gnucash/gnome-utils/gnc-main-window.cpp
@@ -133,7 +133,7 @@ enum
 extern gboolean gnc_book_options_dialog_apply_helper(GncOptionDB * options);
 
 /** Max number of windows allowed */
-constexpr auto gnc_main_window_max_number {10};
+[[maybe_unused]] constexpr auto gnc_main_window_max_number {10};
 
 /* Static Globals *******************************************************/