Joseph Schwab, a 36-year-old California man, charged with a DUI for testing positive for caffeine is fighting to a have the case against him dropped, according to a report by the UPI.

In August 2015, an Alcohol Beverage Control agent pulled over and arrested Schwab for "weaving in and out of traffic almost causing several collisions" and for believing he was under the influence of a drug, according to the UPI report.

The agent found legal workout powders inside his car and conducted several field sobriety tests. A breathalyzer test showed Schwab's blood-alcohol content was at zero percent, according to the report.

Schwab was taken to jail, where he agreed to take a blood test, which showed he only tested positive for caffeine. Schwab's trial is scheduled to begin Jan. 11, 2017, according to the report.