diff --git a/structs/structs.go b/structs/structs.go
index 2f2de812..0c484660 100644
--- a/structs/structs.go
+++ b/structs/structs.go
@@ -70,6 +70,9 @@ func FilterStruct[T any](input T, includeFields, excludeFields []string) (T, err
 
 	for i := 0; i < val.NumField(); i++ {
 		field := typeOfStruct.Field(i)
+		if !field.IsExported() {
+			continue
+		}
 		fieldName := strings.ToLower(field.Name)
 		fieldValue := val.Field(i)