The market for 35mm camera film may be shrinking fast, but it still isn’t safe from counterfeiting, according to Fujifilm.

The Japanese company says it has discovered counterfeit copies of its film products fraudulently bearing its logo that aside from being of suspect quality could damage other customers’ film rolls if developed at the same time in the lab by contaminating the developing chemicals.

The counterfeiters appear to have created counterfeit Fujifilm 250D, 64D, 250T, and 500T Colour Negative Film canisters and filled them with movie film, which cannot be developed using the standard colour negative film process. This sounds more like a case of sabotage.