diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/offline/OfflineMessageManager.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/offline/OfflineMessageManager.java
index f47817b08..ef3c64a8a 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/offline/OfflineMessageManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/offline/OfflineMessageManager.java
@@ -26,6 +26,7 @@ import org.jivesoftware.smack.filter.AndFilter;
 import org.jivesoftware.smack.filter.StanzaExtensionFilter;
 import org.jivesoftware.smack.filter.StanzaFilter;
 import org.jivesoftware.smack.filter.StanzaTypeFilter;
+import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.packet.Message;
 import org.jivesoftware.smack.packet.Stanza;
 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
@@ -222,6 +223,7 @@ public class OfflineMessageManager {
      */
     public void deleteMessages(List<String> nodes) throws NoResponseException, XMPPErrorException, NotConnectedException {
         OfflineMessageRequest request = new OfflineMessageRequest();
+        request.setType(IQ.Type.set);
         for (String node : nodes) {
             OfflineMessageRequest.Item item = new OfflineMessageRequest.Item(node);
             item.setAction("remove");
@@ -240,6 +242,7 @@ public class OfflineMessageManager {
      */
     public void deleteMessages() throws NoResponseException, XMPPErrorException, NotConnectedException {
         OfflineMessageRequest request = new OfflineMessageRequest();
+        request.setType(IQ.Type.set);
         request.setPurge(true);
         connection.createPacketCollectorAndSend(request).nextResultOrThrow();
     }