Index: BuildTrigger.java
===================================================================
--- BuildTrigger.java	(revision 31483)
+++ BuildTrigger.java	(working copy)
@@ -2,6 +2,9 @@
 
 import hudson.Extension;
 import hudson.Launcher;
+import hudson.matrix.MatrixAggregatable;
+import hudson.matrix.MatrixAggregator;
+import hudson.matrix.MatrixBuild;
 import hudson.model.AbstractBuild;
 import hudson.model.AbstractProject;
 import hudson.model.BuildListener;
@@ -23,7 +26,7 @@
 
 import org.kohsuke.stapler.StaplerRequest;
 
-public class BuildTrigger extends Notifier implements DependecyDeclarer {
+public class BuildTrigger extends Notifier implements DependecyDeclarer, MatrixAggregatable {
 
 	private final List<BuildTriggerConfig> configs;
 
@@ -77,6 +80,16 @@
 		return DependencyGraph.class.getClasses().length > 0;
 	}
 
+  public MatrixAggregator createAggregator(MatrixBuild build, Launcher launcher, BuildListener listener) {
+    return new MatrixAggregator(build, launcher, listener) {
+
+      @Override
+      public boolean endBuild() throws InterruptedException, IOException {
+        return hudson.tasks.BuildTrigger.execute(build, listener);
+      }
+    };
+  }
+	
 	@Extension
 	public static class DescriptorImpl extends BuildStepDescriptor<Publisher> {