diff --git a/src/main/org/apache/tools/ant/util/JavaEnvUtils.java b/src/main/org/apache/tools/ant/util/JavaEnvUtils.java
index 0f9ade607..b7aae3372 100644
--- a/src/main/org/apache/tools/ant/util/JavaEnvUtils.java
+++ b/src/main/org/apache/tools/ant/util/JavaEnvUtils.java
@@ -303,7 +303,7 @@ public class JavaEnvUtils {
             case 11:
             default:
                 //things like sun.reflection, sun.misc, sun.net
-                jrePackages.addElement("sun.");
+                jrePackages.addElement("sun");
                 jrePackages.addElement("java");
                 jrePackages.addElement("javax");
                 break;