diff --git a/dlls/taskschd/regtask.c b/dlls/taskschd/regtask.c
index e224b3e8f57..5e9d5d3814a 100644
--- a/dlls/taskschd/regtask.c
+++ b/dlls/taskschd/regtask.c
@@ -157,6 +157,8 @@ static HRESULT WINAPI regtask_get_State(IRegisteredTask *iface, TASK_STATE *stat
 
     TRACE("%p,%p\n", iface, state);
 
+    if (!state) return E_POINTER;
+
     return SchRpcGetTaskInfo(regtask->path, SCH_FLAG_STATE, &enabled, state);
 }
 
@@ -168,6 +170,8 @@ static HRESULT WINAPI regtask_get_Enabled(IRegisteredTask *iface, VARIANT_BOOL *
 
     TRACE("%p,%p\n", iface, v_enabled);
 
+    if (!v_enabled) return E_POINTER;
+
     hr = SchRpcGetTaskInfo(regtask->path, 0, &enabled, &state);
     if (hr == S_OK)
         *v_enabled = enabled ? VARIANT_TRUE : VARIANT_FALSE;
diff --git a/dlls/taskschd/tests/scheduler.c b/dlls/taskschd/tests/scheduler.c
index e54e6ee9ead..17501adef70 100644
--- a/dlls/taskschd/tests/scheduler.c
+++ b/dlls/taskschd/tests/scheduler.c
@@ -909,6 +909,11 @@ todo_wine
 todo_wine
     ok(vbool == VARIANT_TRUE, "expected VARIANT_TRUE, got %d\n", vbool);
 
+    hr = IRegisteredTask_get_State(task2, NULL);
+    ok(hr == E_POINTER, "expected E_POINTER, got %#x\n", hr);
+    hr = IRegisteredTask_get_Enabled(task2, NULL);
+    ok(hr == E_POINTER, "expected E_POINTER, got %#x\n", hr);
+
     IRegisteredTask_Release(task2);
 
     hr = ITaskFolder_DeleteTask(folder, NULL, 0);