diff --git a/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java b/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
index 53bfd5b378..7e71bdb725 100755
--- a/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
+++ b/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
@@ -107,7 +107,7 @@ public abstract class TransMap<K, V> extends MapWrapper<K, V> {
 
 	@Override
 	public V computeIfAbsent(final K key, final Function<? super K, ? extends V> mappingFunction) {
-		return super.computeIfAbsent(customKey(key), k -> customValue(mappingFunction.apply(customKey(k))));
+		return super.computeIfAbsent(customKey(key), k -> customValue(mappingFunction.apply(k)));
 	}
 	//---------------------------------------------------------------------------- Override default methods end