diff --git a/pack.go b/pack.go
index ce1d88a..b4161a9 100644
--- a/pack.go
+++ b/pack.go
@@ -48,7 +48,7 @@ func MakePack(schema PackSchema) Pack {
 			var chosenProb = rand.Float32()
 			for _, alt := range slot.Alternate {
 				currentProb += alt.Probability
-				if chosenProb > currentProb {
+				if currentProb > chosenProb {
 					provider = alt.Provider
 					break
 				}