02 October,2013 11:39 PM IST | | ANI
The âRocky' star had earlier slammed Willis, by calling him "greedy and lazy" on Twitter after the âDie Hard' actor reportedly demanded more money for a four-day shoot for the action film.
Bruce Willis and Sylvester Stallone
Stallone said that his outrage was due to frustration and it turned out okay in the end, Metro.co.uk reported.
The 67-year-old actor admitted that he shouldn't have been so vocal about his anger.
Stallone had raised eyebrows after he announced on the micro-blogging site that Harrison Ford will replace Willis in âThe Expendables 3'.u00a0