diff --git a/hutool-core/src/main/java/cn/hutool/core/io/FileUtil.java b/hutool-core/src/main/java/cn/hutool/core/io/FileUtil.java
index 36d527ce5..c8a9edb98 100644
--- a/hutool-core/src/main/java/cn/hutool/core/io/FileUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/FileUtil.java
@@ -348,7 +348,7 @@ public class FileUtil extends PathUtil {
 	 * @since 4.0.6
 	 */
 	public static File file(File directory, String... names) {
-		Assert.notNull(directory, "directorydirectory must not be null");
+		Assert.notNull(directory, "directory must not be null");
 		if (ArrayUtil.isEmpty(names)) {
 			return directory;
 		}