diff --git a/buffer/src/test/java/io/netty/buffer/AbstractCompositeChannelBufferTest.java b/buffer/src/test/java/io/netty/buffer/AbstractCompositeChannelBufferTest.java
index 0c69083dc2..86fa2a5009 100644
--- a/buffer/src/test/java/io/netty/buffer/AbstractCompositeChannelBufferTest.java
+++ b/buffer/src/test/java/io/netty/buffer/AbstractCompositeChannelBufferTest.java
@@ -109,6 +109,8 @@ public abstract class AbstractCompositeChannelBufferTest extends
             ByteBuf _buf = buf.getBufferFor(index++);
             assertNotNull(_buf);
             assertTrue(_buf.capacity() > 0);
+            assertNotNull(_buf.getByte(0));
+            assertNotNull(_buf.getByte(_buf.readableBytes() - 1));
         }
     }