diff --git a/src/main/java/org/codehaus/plexus/util/IOUtil.java b/src/main/java/org/codehaus/plexus/util/IOUtil.java
index 3fab8411..fdb64163 100644
--- a/src/main/java/org/codehaus/plexus/util/IOUtil.java
+++ b/src/main/java/org/codehaus/plexus/util/IOUtil.java
@@ -156,7 +156,7 @@ private IOUtil()
     public static void copy( final InputStream input, final OutputStream output )
         throws IOException
     {
-        copy( input, output, DEFAULT_BUFFER_SIZE );
+        input.transferTo( output );
     }
 
     /**
@@ -186,7 +186,7 @@ public static void copy( final InputStream input, final OutputStream output, fin
     public static void copy( final Reader input, final Writer output )
         throws IOException
     {
-        copy( input, output, DEFAULT_BUFFER_SIZE );
+        input.transferTo( output );
     }
 
     /**