diff --git a/c++-gtk-utils/prog_present.cpp b/c++-gtk-utils/prog_present.cpp
index a06901b..6ce7a10 100644
--- a/c++-gtk-utils/prog_present.cpp
+++ b/c++-gtk-utils/prog_present.cpp
@@ -72,7 +72,7 @@ static GDBusErrorEntry cgu_prog_presenter_errors[] = {
};
static GQuark cgu_prog_presenter_error_get_quark() {
- static volatile gsize error_quark = 0;
+ static gsize error_quark = 0;
if (!error_quark) {
g_dbus_error_register_error_domain("CguProgPresenterErrorDomain",
&error_quark,