diff --git a/source/ubl-settings-repomanager.c b/source/ubl-settings-repomanager.c
index 88de742..9c495b2 100644
--- a/source/ubl-settings-repomanager.c
+++ b/source/ubl-settings-repomanager.c
@@ -909,6 +909,7 @@ void on_key_generate_accept(GtkWidget *self, key_creation_window* window){
     if (gtk_combo_box_get_active(GTK_COMBO_BOX(window->ExpireCombo))==1){
         GDateTime *datetime = g_date_time_new_from_unix_local(yon_calendar_get_last_date());
         expire = g_date_time_format(datetime,"%Y%m%dT000000");
+        g_date_time_unref(datetime);
 
     }
     const char *password = gtk_entry_get_text(GTK_ENTRY(window->PasswordEntry));