diff --git a/dlls/ntdll/tests/pipe.c b/dlls/ntdll/tests/pipe.c
index 690988223c4..358e7020698 100644
--- a/dlls/ntdll/tests/pipe.c
+++ b/dlls/ntdll/tests/pipe.c
@@ -150,7 +150,7 @@ static void test_create_invalid(void)
 /* create a pipe with sharing = 0 */
     res = pNtCreateNamedPipeFile(&handle, FILE_READ_ATTRIBUTES | SYNCHRONIZE, &attr, &iosb, 0, 2 /*FILE_CREATE*/,
                                  0, 1, 0, 0, 0xFFFFFFFF, 500, 500, &timeout);
-    todo_wine ok(res == STATUS_INVALID_PARAMETER, "NtCreateNamedPipeFile returned %x\n", res);
+    ok(res == STATUS_INVALID_PARAMETER, "NtCreateNamedPipeFile returned %x\n", res);
     if (!res)
         CloseHandle(handle);
 
diff --git a/server/named_pipe.c b/server/named_pipe.c
index 0f89f5ba445..66664bbc301 100644
--- a/server/named_pipe.c
+++ b/server/named_pipe.c
@@ -940,6 +940,12 @@ DECL_HANDLER(create_named_pipe)
     struct unicode_str name;
     struct directory *root = NULL;
 
+    if (!req->sharing || (req->sharing & ~(FILE_SHARE_READ | FILE_SHARE_WRITE)))
+    {
+        set_error( STATUS_INVALID_PARAMETER );
+        return;
+    }
+
     reply->handle = 0;
     get_req_unicode_str( &name );
     if (req->rootdir && !(root = get_directory_obj( current->process, req->rootdir, 0 )))