diff --git a/dlls/mstask/mstask.spec b/dlls/mstask/mstask.spec
index 5c4f208f35e..0b6c23b79de 100644
--- a/dlls/mstask/mstask.spec
+++ b/dlls/mstask/mstask.spec
@@ -25,3 +25,4 @@
 @ stub _SASetNSAccountInformation@12
 @ stub _SetNetScheduleAccountInformation@12
 @ stdcall -private DllRegisterServer()
+@ stdcall -private DllUnregisterServer()
diff --git a/dlls/mstask/mstask_main.c b/dlls/mstask/mstask_main.c
index 53c34491a46..c7b3dea5a1b 100644
--- a/dlls/mstask/mstask_main.c
+++ b/dlls/mstask/mstask_main.c
@@ -155,3 +155,8 @@ HRESULT WINAPI DllRegisterServer(void)
 {
     return register_mstask(TRUE);
 }
+
+HRESULT WINAPI DllUnregisterServer(void)
+{
+    return register_mstask(FALSE);
+}