Uniswap - Wrong Network message with Ethereum Classic

I recently purchased Ethereum Classic (ETC) and transferred it to my Metamask wallet. It did not show up at first, but I then realized that I had to create a custom RPC specifically for ETC. I did that, and the proper balance now shows in my account. So far, so good. My issues comes from the fact that if my Metamask wallet is set to my new RPC I continue to get an error message from Uniswap that says the following:

“Wrong Network
Please connect to the appropriate Ethereum network.”

Of course, I can always go back and change my wallet to the Ethereum Mainnet, which once again allows me to connect to Uniswap. But that does not do me any good because I then cannot access my Ethereum Classic balance to conduct a swap. Is there anyway around this problem?