I am taking 50 mg of Deca a week for joints but also on finasteride? Bad?

I take 200 mg of test a week and want to start doing a small amount of deca for my joints. I am 46 years old and have done a lot of gear over the years. I’ve heard that Deca on finasteride does an adverse affect and makes hair lose worse. I’m sure that it’s a true statement so I’m wondering if 50 mgs of Deca isn’t a big enough of dose to mess with the hairline? Or if ANY doses of Deca will cause issues on Finasteride?