Presidential GOP front-runner Donald Trump isn’t as rich as he thinks. At least, that is according to Forbes’ magazine’s most recent issue slated to hit newsstands October.

The Donald, as the outspoken real estate mogul’s former wife Ivana dubbed him, has pegged his net worth at around $10 billion. But according to its ranking of the wealthiest people in the U.S., Forbes is listing Trump’s riches at $4.5 billion.

That is hardly a figure to sneeze it, considering that the entry into Forbes latest rich list required a net worth of at least $1.7 billion. But Trump wasn’t pleased with the financial magazine’s assessment of his wealth. Here’s what he said, according to an article by Forbes’ Randall Lane:

“I think you’re trying to make me as poor as possible,” Trump told the magazine. Trump also offered this: “And look, all I can say is Forbes is a bankrupt magazine, doesn’t know what they’re talking about. That is all I’m gonna say.”

Steve Forbes—who made a bid for the White House in 1996 and 2000—took to CNBC on Tuesday to defend the publication’s valuation of Trump.

“Well, I think the biggest difference is in terms of how he values his brand, We don’t use brand value in terms of our valuations because we figure if you have some brand value that you’re going to find a way to monetize, but until you do, we don’t count it,” said Forbes, chairman and editor in chief at Forbes.

Trump ranks as the 121st richest person in America, according to Forbes, placing him just below Wal-Mart Stores Inc. WMT, +0.90% heiress Ann Walton Kroenke. Here’s a link to the complete ranking.

Microsoft Corp. MSFT, +2.40% co-founder and philanthropist Bill Gates with a net worth of $76 billion, Billionaire investor Warren Buffett at $62 billion, and tech mogul Larry Ellison at $47.5 billion lead the magazine’s wealth list.

Trump’s net worth has proved a sensitive subject, leading him to file a lawsuit in 2006 against a reporter, who Trump claimed understated his wealth. The lawsuit was eventually dismissed.

But if it is any consolation to The Donald, he’s the wealthiest among the current roster of presidential candidates, according to Forbes.

A call to a Trump spokesman late Tuesday wasn’t immediately returned.