diff --git a/core/src/main/java/hudson/tasks/Fingerprinter.java b/core/src/main/java/hudson/tasks/Fingerprinter.java
index 2f943c2dba65d002f29e7d16fd3a8bd69a4f8d5c..c2f7b2a98022ca4a22d98649d07aa5fcdbb68763 100644
--- a/core/src/main/java/hudson/tasks/Fingerprinter.java
+++ b/core/src/main/java/hudson/tasks/Fingerprinter.java
@@ -249,6 +249,14 @@ public class Fingerprinter extends Recorder implements Serializable {
             onLoad();   // make compact
         }
 
+        public void add(Map<String,String> moreRecords) {
+            Map<String,String> r = new HashMap<String, String>(record);
+            r.putAll(moreRecords);
+            record = ImmutableMap.copyOf(r);
+            ref = null;
+            onLoad();
+        }
+
         public String getIconFileName() {
             return "fingerprint.gif";
         }
diff --git a/maven-plugin/src/main/java/hudson/maven/reporters/MavenArtifactArchiver.java b/maven-plugin/src/main/java/hudson/maven/reporters/MavenArtifactArchiver.java
index d1749144b5c6a6a522432d87bb06ccdb01bc3043..7a98edd3a6ed30b3990c0e3b1128a10092851ba4 100644
--- a/maven-plugin/src/main/java/hudson/maven/reporters/MavenArtifactArchiver.java
+++ b/maven-plugin/src/main/java/hudson/maven/reporters/MavenArtifactArchiver.java
@@ -128,6 +128,11 @@ public class MavenArtifactArchiver extends MavenReporter {
             // record the action
             build.executeAsync(new MavenBuildProxy.BuildCallable<Void,IOException>() {
                 public Void call(MavenBuild build) throws IOException, InterruptedException {
+                    // if a build forks lifecycles, this method can be called multiple times
+                    List<MavenArtifactRecord> old = Util.filter(build.getActions(), MavenArtifactRecord.class);
+                    if (!old.isEmpty())
+                        build.getActions().removeAll(old);
+
                     MavenArtifactRecord mar = new MavenArtifactRecord(build,pomArtifact,mainArtifact,attachedArtifacts);
                     build.addAction(mar);