diff --git a/builder/util.go b/builder/util.go
index e686c24..09e7b62 100644
--- a/builder/util.go
+++ b/builder/util.go
@@ -2,7 +2,7 @@ package builder
 
 import "reflect"
 
-func ToSlice(arg any) []any {
+func toSlice(arg any) []any {
 	ref := reflect.Indirect(reflect.ValueOf(arg))
 	var res []any
 	switch ref.Kind() {
diff --git a/builder/where.go b/builder/where.go
index daaeea2..f472f25 100644
--- a/builder/where.go
+++ b/builder/where.go
@@ -237,16 +237,16 @@ func (w *WhereClause) where(boolean string, column any, args ...any) IWhere {
 		if rfv.Kind() == reflect.Slice { // in/between
 			var operators = []string{"in", "not in"}
 			if slices.Contains(operators, strings.ToLower(args[0].(string))) {
-				val := ToSlice(args[1])
+				val := toSlice(args[1])
 				if len(val) > 0 {
-					w.addTypeWhereIn(args[2].(string), column.(string), args[0].(string), ToSlice(args[1]))
+					w.addTypeWhereIn(args[2].(string), column.(string), args[0].(string), toSlice(args[1]))
 				}
 			}
 			operators = []string{"between", "not between"}
 			if slices.Contains(operators, strings.ToLower(args[0].(string))) {
-				val := ToSlice(args[1])
+				val := toSlice(args[1])
 				if len(val) > 0 {
-					w.addTypeWhereBetween(args[2].(string), column.(string), args[0].(string), ToSlice(args[1]))
+					w.addTypeWhereBetween(args[2].(string), column.(string), args[0].(string), toSlice(args[1]))
 				}
 			}
 		} else if builder, ok := args[1].(IBuilder); ok {