diff --git a/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java b/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java
index b613fea9e1..aa9ee28b94 100644
--- a/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java
+++ b/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java
@@ -580,7 +580,7 @@ public class PooledByteBufAllocator extends AbstractByteBufAllocator implements
         return usedMemory(directArenas);
     }
 
-    private static long usedMemory(PoolArena<?>... arenas) {
+    private static long usedMemory(PoolArena<?>[] arenas) {
         if (arenas == null) {
             return -1;
         }