Adolf Hitler may or may not have had a micropenis, according to historian Emma Craige, who co-wrote the book that sparked the rumor.

Adolf Hitler Micropenis?

Craige and fellow historian Jonathan Mayo penned Hitler’s Last Stand: Minute by Minute, a nonfiction book published last year that suggested that the German dictator may have been afflicted with a micropenis as a result of a condition called hypospadias.

“Hitler himself is believed to have had two forms of genital abnormality,” Craige and Mayo write in their book. “An undescended testicle and a rare condition called penile hypospadias in which the urethra opens on the underside of the penis.”

After the passage was picked up again this week by the media, Craige admitted that the suggestion that Hitler had a micropenis is a “leap. Furthermore, she personally has not come upon any evidence that would confirm that Hitler had any specific conditions aside from “general hypospadias,” according to the U.K. Independent.

As for the other claim – that Hitler had an undescended testicle – that has long been rumored in addition to the speculation that he was asexual. Mayo and Craigie claim that the documentation that they have unearthed proves that his personal doctor, Theodor Morell, diagnosed him with hypospadias, and that he had attempted to boost Hitler’s sex drive with prescriptions for hormones and amphetamines.