diff --git a/reactos/ntoskrnl/ps/psmgr.c b/reactos/ntoskrnl/ps/psmgr.c
index e7ca623bdd3..e9fe4d4b867 100644
--- a/reactos/ntoskrnl/ps/psmgr.c
+++ b/reactos/ntoskrnl/ps/psmgr.c
@@ -27,4 +27,5 @@ VOID PiInitProcessManager(VOID)
    PsInitProcessManagment();
    PsInitThreadManagment();
    PsInitIdleThread();
+   PiInitApcManagement();
 }