diff --git a/nephele/nephele-common/src/main/java/eu/stratosphere/nephele/services/iomanager/ChannelReader.java b/nephele/nephele-common/src/main/java/eu/stratosphere/nephele/services/iomanager/ChannelReader.java
index <HASH>..<HASH> 100644
--- a/nephele/nephele-common/src/main/java/eu/stratosphere/nephele/services/iomanager/ChannelReader.java
+++ b/nephele/nephele-common/src/main/java/eu/stratosphere/nephele/services/iomanager/ChannelReader.java
@@ -62,7 +62,7 @@ public final class ChannelReader extends ChannelAccess<Buffer.Input> implements 
 	{
 		synchronized (this) {
 			if (this.closed) {
-				throw new IllegalStateException("Writer is already closing or has been closed.");
+				throw new IllegalStateException("Reader is already closing or has been closed.");
 			}
 			this.closed = true;
 		}
- Fixed copy-and-paste mistake in exception statement