diff --git a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
index 870594aa1..7f629bc0f 100644
--- a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
@@ -2108,7 +2108,7 @@ public class CollUtil {
 	 * @return 原集合
 	 */
 	public static <T> Collection<T> addAll(Collection<T> collection, Iterable<T> iterable) {
-		if(iterable == null){
+		if (iterable == null) {
 			return collection;
 		}
 		return addAll(collection, iterable.iterator());