UK Immigration Minister Robert Jenrick has advised former Prime Minister Boris Johnson not to nominate his father Stanley for a knighthood.
Reports surfaced earlier that the elder Johnson was in line for the honour.
Nominating relatives goes against good judgement, Jenrick said on BBC Question Time.
Johnson-inspired honours have elicited criticism in the past, and David Davis, former Brexit secretary, called the idea "ridiculous" and "corrosive".
Reports that Boris Johnson, the former UK Prime Minister, was planning to nominate his father, Stanley, for a knighthood are said to have prompted a strong response from Robert Jenrick, a government minister.
Speaking on the BBC's Question Time programme, Jenrick warned against the nomination, stating that prime ministers should "absolutely not" award honours to family members.
Press reports indicate that Stanley Johnson was set to appear on Johnson's pending resignation honours list.
The list currently includes about 50 names, less than the 100 previously suggested.
Labour Party leaders criticised Johnson's apparent plans, with some suggesting that the Prime Minister should block Stanley Johnson's inclusion.
Those who have spoken out have described the move as an abuse of the honours system.
David Davis, who once served as Brexit secretary under Johnson, was dismissive of the move, stating that it was "ridiculous" and "corrosive".
Labour leader, Sir Keir Starmer, was similarly scathing, arguing that the notion was "absolutely outrageous".