diff --git a/cardsim/deck.go b/cardsim/deck.go
index 2b10db4..d672597 100644
--- a/cardsim/deck.go
+++ b/cardsim/deck.go
@@ -171,19 +171,19 @@ func (d *Deck[C]) InsertRandomRange(loFrac, hiFrac float64, card Card[C]) error
 		loFrac, hiFrac = hiFrac, loFrac
 	}
 	if loFrac < 0.0 {
-		errs.Add(Warningf("%w: loFrac was %d", WarningTopClamped, loFrac))
+		errs.Add(Warningf("%w: loFrac was %f", WarningTopClamped, loFrac))
 		loFrac = 0.0
 	}
 	if loFrac > 1.0 {
-		errs.Add(Warningf("%w: loFrac was %d", WarningBottomClamped, loFrac))
+		errs.Add(Warningf("%w: loFrac was %f", WarningBottomClamped, loFrac))
 		loFrac = 1.0
 	}
 	if hiFrac < 0.0 {
-		errs.Add(Warningf("%w: hiFrac was %d", WarningTopClamped, hiFrac))
+		errs.Add(Warningf("%w: hiFrac was %f", WarningTopClamped, hiFrac))
 		hiFrac = 0.0
 	}
 	if hiFrac > 1.0 {
-		errs.Add(Warningf("%w: hiFrac was %d", WarningBottomClamped, hiFrac))
+		errs.Add(Warningf("%w: hiFrac was %f", WarningBottomClamped, hiFrac))
 		hiFrac = 1.0
 	}