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,