diff --git a/WHATSNEW b/WHATSNEW
index 9e6be90bf..f01fb84e0 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -187,6 +187,10 @@ Fixed bugs:
    <subant> might set the wrong basedir on the called projects.
    Bugzilla Report 30569.
 
+ * If the message of the failed assertion of a forked JUnit test
+   contained line feeds some excess output ended up in Ant's log.
+   Bugzilla Report 45411.
+
 Other changes:
 --------------
 
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java b/src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java
index ebb86aa2b..75d2d3091 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java
@@ -495,10 +495,17 @@ public class JUnitTestRunner implements TestListener, JUnitTaskMirror.JUnitTestR
     }
 
     private void logTestListenerEvent(String msg) {
-        PrintStream out = savedOut != null ? savedOut : System.out;
         if (logTestListenerEvents) {
+            PrintStream out = savedOut != null ? savedOut : System.out;
             out.flush();
-            out.println(JUnitTask.TESTLISTENER_PREFIX + msg);
+            if (msg == null) {
+                msg = "null";
+            }
+            StringTokenizer msgLines = new StringTokenizer(msg, "\r\n", false);
+            while (msgLines.hasMoreTokens()) {
+                out.println(JUnitTask.TESTLISTENER_PREFIX
+                            + msgLines.nextToken());
+            }
             out.flush();
         }
     }
diff --git a/src/tests/junit/org/apache/tools/ant/taskdefs/optional/junit/JUnitTaskTest.java b/src/tests/junit/org/apache/tools/ant/taskdefs/optional/junit/JUnitTaskTest.java
index 3e428b8e2..97a58ade1 100644
--- a/src/tests/junit/org/apache/tools/ant/taskdefs/optional/junit/JUnitTaskTest.java
+++ b/src/tests/junit/org/apache/tools/ant/taskdefs/optional/junit/JUnitTaskTest.java
@@ -227,7 +227,7 @@ public class JUnitTaskTest extends BuildFileTest {
     }
 
     // Bugzilla Issue 45411
-    public void XtestMultilineAssertsFork() {
+    public void testMultilineAssertsFork() {
         expectLogNotContaining("testMultilineAssertsFork", "messed up)");
         assertLogNotContaining("crashed)");
     }