diff --git a/src/k_tally.cpp b/src/k_tally.cpp
index b6f339989..8a855f909 100644
--- a/src/k_tally.cpp
+++ b/src/k_tally.cpp
@@ -247,7 +247,7 @@ INT32 level_tally_t::CalculateGrade(void)
 			case TALLY_BONUS_EXP:
 			{
 				const fixed_t frac = std::min(FRACUNIT, ((exp) * FRACUNIT) / std::max(1, static_cast<int>(totalExp)));
-				ours += Easing_InCubic(frac, 0, bonusWeights[i]);
+				ours += Easing_InQuint(frac, 0, bonusWeights[i]);
 				break;
 			}
 			case TALLY_BONUS_PRISON: