diff --git a/src/main/org/apache/tools/ant/taskdefs/SignJar.java b/src/main/org/apache/tools/ant/taskdefs/SignJar.java
index 7b71d4df2..fc1d80770 100644
--- a/src/main/org/apache/tools/ant/taskdefs/SignJar.java
+++ b/src/main/org/apache/tools/ant/taskdefs/SignJar.java
@@ -210,6 +210,8 @@ public class SignJar extends Task {
         log("Signing Jar : " + (new File(jar)).getAbsolutePath());
         final Exec cmd = (Exec) project.createTask("exec");
         cmd.setCommand(sb.toString());
+        cmd.setFailonerror("true");
+        cmd.setTaskName( getTaskName() );
         cmd.execute();
     } 
 }