diff --git a/sim/common/wotlk/nibelung.go b/sim/common/wotlk/nibelung.go
index ca59365e9c..b9931eefaf 100644
--- a/sim/common/wotlk/nibelung.go
+++ b/sim/common/wotlk/nibelung.go
@@ -39,7 +39,7 @@ func getSmiteConfig(valkyr *ValkyrPet, spellId int32, damageMin float64, damageM
 		ProcMask:    core.ProcMaskSpellDamage,
 		Cast: core.CastConfig{
 			DefaultCast: core.Cast{
-				GCD:      time.Second * 30 / 16, // 1.875s (16 casts per 30s)
+				GCD:      time.Millisecond * 1950, // about 16 instant-casts per 30s with some time left-over
 				CastTime: 0,
 			},
 		},