diff --git a/WHATSNEW b/WHATSNEW
index b22fbb04d..fd28942b4 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -8,6 +8,9 @@ Fixed bugs:
 -----------
 * SPI support in jar was broken.
   Bugzilla report 41201.
+  
+* jsch-0.1.30 causes SCP task to hang
+  Bugzilla report 41090.
 
 Other changes:
 --------------
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/ssh/ScpToMessage.java b/src/main/org/apache/tools/ant/taskdefs/optional/ssh/ScpToMessage.java
index 185902105..f7cb0d3b0 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/ssh/ScpToMessage.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/ssh/ScpToMessage.java
@@ -209,6 +209,7 @@ public class ScpToMessage extends AbstractSshMessage {
         waitForAck(in);
         sendDirectory(directory, in, out);
         out.write("E\n".getBytes());
+        out.flush();
         waitForAck(in);
     }