diff --git a/core/src/main/java/org/bitcoinj/core/TransactionConfidence.java b/core/src/main/java/org/bitcoinj/core/TransactionConfidence.java
index 78978fa2..10461e09 100644
--- a/core/src/main/java/org/bitcoinj/core/TransactionConfidence.java
+++ b/core/src/main/java/org/bitcoinj/core/TransactionConfidence.java
@@ -270,9 +270,10 @@ public class TransactionConfidence implements Serializable {
     /**
      * Called by a {@link Peer} when a transaction is pending and announced by a peer. The more peers announce the
      * transaction, the more peers have validated it (assuming your internet connection is not being intercepted).
-     * If confidence is currently unknown, sets it to {@link ConfidenceType#PENDING}.
+     * If confidence is currently unknown, sets it to {@link ConfidenceType#PENDING}. Does not run listeners.
      *
      * @param address IP address of the peer, used as a proxy for identity.
+     * @return true if marked, false if this address was already seen (no-op)
      */
     public synchronized boolean markBroadcastBy(PeerAddress address) {
         if (!broadcastBy.addIfAbsent(address))
diff --git a/core/src/main/java/org/bitcoinj/core/TxConfidenceTable.java b/core/src/main/java/org/bitcoinj/core/TxConfidenceTable.java
index 328c5b35..8b49c41e 100644
--- a/core/src/main/java/org/bitcoinj/core/TxConfidenceTable.java
+++ b/core/src/main/java/org/bitcoinj/core/TxConfidenceTable.java
@@ -139,14 +139,16 @@ public class TxConfidenceTable {
      */
     public TransactionConfidence seen(Sha256Hash hash, PeerAddress byPeer) {
         TransactionConfidence confidence;
+        boolean fresh = false;
         lock.lock();
         {
             cleanTable();
             confidence = getOrCreate(hash);
-            confidence.markBroadcastBy(byPeer);
+            fresh = confidence.markBroadcastBy(byPeer);
         }
         lock.unlock();
-        confidence.queueListeners(TransactionConfidence.Listener.ChangeReason.SEEN_PEERS);
+        if (fresh)
+            confidence.queueListeners(TransactionConfidence.Listener.ChangeReason.SEEN_PEERS);
         return confidence;
     }
 
diff --git a/core/src/test/java/org/bitcoinj/core/TxConfidenceTableTest.java b/core/src/test/java/org/bitcoinj/core/TxConfidenceTableTest.java
index 0edce577..b8aab869 100644
--- a/core/src/test/java/org/bitcoinj/core/TxConfidenceTableTest.java
+++ b/core/src/test/java/org/bitcoinj/core/TxConfidenceTableTest.java
@@ -69,6 +69,22 @@ public class TxConfidenceTableTest {
         assertEquals(2, seen[0]);
     }
 
+    @Test
+    public void events() throws Exception {
+        final TransactionConfidence.Listener.ChangeReason[] run = new TransactionConfidence.Listener.ChangeReason[1];
+        tx1.getConfidence().addEventListener(new TransactionConfidence.Listener() {
+            @Override
+            public void onConfidenceChanged(TransactionConfidence confidence, ChangeReason reason) {
+                run[0] = reason;
+            }
+        }, Threading.SAME_THREAD);
+        table.seen(tx1.getHash(), address1);
+        assertEquals(TransactionConfidence.Listener.ChangeReason.SEEN_PEERS, run[0]);
+        run[0] = null;
+        table.seen(tx1.getHash(), address1);
+        assertNull(run[0]);
+    }
+
     @Test
     public void invAndDownload() throws Exception {
         // Base case: we see a transaction announced twice and then download it. The count is in the confidence object.