diff --git a/source/org/jivesoftware/smack/PacketWriter.java b/source/org/jivesoftware/smack/PacketWriter.java
index ebb48f005..651a47c64 100644
--- a/source/org/jivesoftware/smack/PacketWriter.java
+++ b/source/org/jivesoftware/smack/PacketWriter.java
@@ -339,6 +339,7 @@ class PacketWriter {
                 synchronized (writer) {
                     try {
                         writer.write(" ");
+                        writer.flush();
                     }
                     catch (Exception e) { }
                 }