Although past research has convincingly shown that rewarding prosocial individuals helps to establish high levels of cooperation, research investigating factors that promote rewarding others has been surprisingly rare. The present research addresses this gap and examines two factors that were shown in past research to play a role in prosocial behaviour. In a well-powered study (total N = 1003), we tested the impact of (a) a basic prosocial personality trait (the Honesty-Humility dimension from the HEXACO personality model) and (b) intuitive decision-making, as well as (c) their interaction, in rewarding prosocial individuals. We found that (1) intuition promotes rewarding prosocial others; (2) Honesty-Humility was not significantly related to rewarding prosocial others; and (3) that Honesty-Humility did not significantly moderate the effect of intuition on reward. Implications for the understanding of reciprocating others' prosocial behaviour are discussed.