Anti Staff Ping – Message content includes not working

I want an anti staff ping, but this code is not working:

client.on('message', (message) => {
if (message.content.includes === '<@934892369495597066>') {
message.channel.send(`Hey, <@${message.author.id}>! Zou je niet onze staffleden willen pingen?`);
}});

With message.content it works, but not with message.content.includes?