diff --git a/fileutil/file_example_test.go b/fileutil/file_example_test.go
index d3a31d1..973d92b 100644
--- a/fileutil/file_example_test.go
+++ b/fileutil/file_example_test.go
@@ -19,7 +19,7 @@ func ExampleIsExist() {
 }
 
 func ExampleCreateFile() {
-	fname := "./test.txt"
+	fname := "./a.txt"
 
 	result1 := IsExist(fname)