diff --git a/src/main/java/org/jboss/netty/channel/socket/nio/NioSocketChannelConfig.java b/src/main/java/org/jboss/netty/channel/socket/nio/NioSocketChannelConfig.java
index 94e552f47c..abf7142ae3 100644
--- a/src/main/java/org/jboss/netty/channel/socket/nio/NioSocketChannelConfig.java
+++ b/src/main/java/org/jboss/netty/channel/socket/nio/NioSocketChannelConfig.java
@@ -62,14 +62,14 @@ public interface NioSocketChannelConfig extends SocketChannelConfig {
     /**
      * Returns the high water mark of the write buffer.  If the number of bytes
      * queued in the write buffer exceeds this value, {@link Channel#isWritable()}
-     * will start to return {@code true}.
+     * will start to return {@code false}.
      */
     int getWriteBufferHighWaterMark();
 
     /**
      * Sets the high water mark of the write buffer.  If the number of bytes
      * queued in the write buffer exceeds this value, {@link Channel#isWritable()}
-     * will start to return {@code true}.
+     * will start to return {@code false}.
      */
     void setWriteBufferHighWaterMark(int writeBufferHighWaterMark);
 
@@ -78,7 +78,7 @@ public interface NioSocketChannelConfig extends SocketChannelConfig {
      * queued in the write buffer exceeded the
      * {@linkplain #setWriteBufferHighWaterMark(int) high water mark} and then
      * dropped down below this value, {@link Channel#isWritable()} will return
-     * {@code false} again.
+     * {@code true} again.
      */
     int getWriteBufferLowWaterMark();
 
@@ -87,7 +87,7 @@ public interface NioSocketChannelConfig extends SocketChannelConfig {
      * queued in the write buffer exceeded the
      * {@linkplain #setWriteBufferHighWaterMark(int) high water mark} and then
      * dropped down below this value, {@link Channel#isWritable()} will return
-     * {@code false} again.
+     * {@code true} again.
      */
     void setWriteBufferLowWaterMark(int writeBufferLowWaterMark);