diff --git a/src/adldap/ad_security.cpp b/src/adldap/ad_security.cpp
index 07f76e1c..4d92a561 100644
--- a/src/adldap/ad_security.cpp
+++ b/src/adldap/ad_security.cpp
@@ -28,6 +28,7 @@
 #include "samba/security_descriptor.h"
 
 #include "ad_filter.h"
+#include "common_task_manager.h"
 
 #include <QDebug>
 
@@ -158,6 +159,8 @@ const QList<uint32_t> common_rights_list = {
 // and when reading it.
 #define GENERIC_READ_FIXED (SEC_ADS_GENERIC_READ & ~SEC_ADS_LIST_OBJECT)
 
+CommonTaskManager *common_task_manager = new CommonTaskManager();
+
 SecurityRightState::SecurityRightState(const bool data_arg[SecurityRightStateInherited_COUNT][SecurityRightStateType_COUNT]) {
     for (int inherited = 0; inherited < SecurityRightStateInherited_COUNT; inherited++) {
         for (int type = 0; type < SecurityRightStateType_COUNT; type++) {
diff --git a/src/adldap/ad_security.h b/src/adldap/ad_security.h
index 3e010742..e5885338 100644
--- a/src/adldap/ad_security.h
+++ b/src/adldap/ad_security.h
@@ -36,6 +36,7 @@ class AdConfig;
 class AdObject;
 struct security_descriptor;
 struct dom_sid;
+class CommonTaskManager;
 typedef void TALLOC_CTX;
 
 extern const QList<QString> well_known_sid_list;
@@ -80,6 +81,9 @@ struct SecurityRight {
                 (another.flags == flags);
     }
 };
+Q_DECLARE_METATYPE(SecurityRight)
+
+extern CommonTaskManager *common_task_manager;
 
 QString ad_security_get_well_known_trustee_name(const QByteArray &trustee);
 QString ad_security_get_trustee_name(AdInterface &ad, const QByteArray &trustee);