diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/BlockingCommandManager.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/BlockingCommandManager.java
index 6ee6bdce7..55044394d 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/BlockingCommandManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/BlockingCommandManager.java
@@ -169,7 +169,7 @@ public final class BlockingCommandManager extends Manager {
 
         BlockListIQ blockListIQ = new BlockListIQ();
         BlockListIQ blockListIQResult = connection().createPacketCollectorAndSend(blockListIQ).nextResultOrThrow();
-        blockListCached = blockListIQResult.getJids();
+        blockListCached = blockListIQResult.getBlockedJidsCopy();
 
         return Collections.unmodifiableList(blockListCached);
     }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/element/BlockListIQ.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/element/BlockListIQ.java
index c24da5718..60267d3fb 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/element/BlockListIQ.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/blocking/element/BlockListIQ.java
@@ -16,6 +16,7 @@
  */
 package org.jivesoftware.smackx.blocking.element;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
@@ -52,9 +53,10 @@ public class BlockListIQ extends IQ {
     public BlockListIQ(List<Jid> jids) {
         super(ELEMENT, NAMESPACE);
         if (jids == null) {
-            jids = Collections.emptyList();
+            this.jids = Collections.emptyList();
+        } else {
+            this.jids = Collections.unmodifiableList(jids);
         }
-        this.jids = jids;
     }
 
     /**
@@ -65,14 +67,23 @@ public class BlockListIQ extends IQ {
     }
 
     /**
-     * Get the JIDs.
+     * Get the JIDs as unmodifiable list.
      * 
-     * @return the JIDs
+     * @return the blocked JIDs
      */
-    public List<Jid> getJids() {
+    public List<Jid> getBlockedJids() {
         return jids;
     }
 
+    /**
+     * Get a copy of the blocked list JIDs. This copy is modifiable.
+     *
+     * @return the blocked JIDs
+     */
+    public List<Jid> getBlockedJidsCopy() {
+        return new ArrayList<>(getBlockedJids());
+    }
+
     @Override
     protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder xml) {
         if (jids.isEmpty()) {
diff --git a/smack-extensions/src/test/java/org/jivesoftware/smackx/blocking/GetBlockingListTest.java b/smack-extensions/src/test/java/org/jivesoftware/smackx/blocking/GetBlockingListTest.java
index a14381ccf..877661eb7 100644
--- a/smack-extensions/src/test/java/org/jivesoftware/smackx/blocking/GetBlockingListTest.java
+++ b/smack-extensions/src/test/java/org/jivesoftware/smackx/blocking/GetBlockingListTest.java
@@ -47,13 +47,13 @@ public class GetBlockingListTest {
     public void checkBlockListIQ() throws Exception {
         IQ iq = (IQ) PacketParserUtils.parseStanza(blockListIQExample);
         BlockListIQ blockListIQ = (BlockListIQ) iq;
-        Assert.assertEquals(2, blockListIQ.getJids().size());
-        Assert.assertEquals(JidCreate.from("romeo@montague.net"), blockListIQ.getJids().get(0));
-        Assert.assertEquals(JidCreate.from("iago@shakespeare.lit"), blockListIQ.getJids().get(1));
+        Assert.assertEquals(2, blockListIQ.getBlockedJids().size());
+        Assert.assertEquals(JidCreate.from("romeo@montague.net"), blockListIQ.getBlockedJids().get(0));
+        Assert.assertEquals(JidCreate.from("iago@shakespeare.lit"), blockListIQ.getBlockedJids().get(1));
 
         IQ iq2 = (IQ) PacketParserUtils.parseStanza(emptyBlockListIQExample);
         BlockListIQ emptyBlockListIQ = (BlockListIQ) iq2;
-        Assert.assertEquals(0, emptyBlockListIQ.getJids().size());
+        Assert.assertEquals(0, emptyBlockListIQ.getBlockedJids().size());
     }
 
 }