diff --git a/gnucash/gnome/gnc-plugin-business.c b/gnucash/gnome/gnc-plugin-business.c
index fe4c97d30b..a4c62e83f5 100644
--- a/gnucash/gnome/gnc-plugin-business.c
+++ b/gnucash/gnome/gnc-plugin-business.c
@@ -241,6 +241,11 @@ gnc_plugin_business_finalize (GObject *object)
 {
     g_return_if_fail (GNC_IS_PLUGIN_BUSINESS (object));
 
+    GncPluginBusiness *plugin = (GncPluginBusiness*) object;
+    gncOwnerFree (plugin->last_customer);
+    gncOwnerFree (plugin->last_vendor);
+    gncOwnerFree (plugin->last_employee);
+
     G_OBJECT_CLASS (gnc_plugin_business_parent_class)->finalize (object);
 }