diff --git a/gapr.go b/gapr.go
index b3fcc04..18b2b11 100644
--- a/gapr.go
+++ b/gapr.go
@@ -42,7 +42,7 @@ func (g *Gapr) Map(input any) (any, error) {
 	case reflect.Struct, reflect.Interface:
 		return g.mapStruct(t, v)
 	case reflect.Slice, reflect.Array:
-		return g.mapSliceOrArray(t, v)
+		return g.mapSliceOrArray(v)
 	default:
 		return nil, ErrNotSupportedType
 	}
@@ -103,7 +103,7 @@ func (g *Gapr) mapMap(t reflect.Type, v reflect.Value) (any, error) {
 	return mapped, nil
 }
 
-func (g *Gapr) mapSliceOrArray(t reflect.Type, v reflect.Value) (any, error) {
+func (g *Gapr) mapSliceOrArray(v reflect.Value) (any, error) {
 	var (
 		length = v.Len()
 		target = reflect.ValueOf(make([]any, length, length))
@@ -142,7 +142,7 @@ func (g *Gapr) fieldMeta(f reflect.StructField) (drop bool, fieldName string, er
 		return false, "", err
 	}
 
-	drop = g.rand.Float64() < 1.0-dropProbability
+	drop = g.rand.Float64() < dropProbability
 	if tagSplit[1] != "" {
 		fieldName = strings.TrimSpace(tagSplit[1])
 	}