diff --git a/src/main/org/apache/tools/ant/AntClassLoader.java b/src/main/org/apache/tools/ant/AntClassLoader.java
index 6c844a742..714caf1ea 100644
--- a/src/main/org/apache/tools/ant/AntClassLoader.java
+++ b/src/main/org/apache/tools/ant/AntClassLoader.java
@@ -229,10 +229,6 @@ public class AntClassLoader  extends ClassLoader {
     public AntClassLoader(Project project, Path classpath) {
         this.project = project;
         this.classpath = classpath.concatSystemClasspath("ignore");
-
-        // JDK > 1.1 should add these by default, but some VMs don't
-        addSystemPackageRoot("java");
-        addSystemPackageRoot("javax");
     }
 
     /**
@@ -244,6 +240,8 @@ public class AntClassLoader  extends ClassLoader {
     public AntClassLoader(Project project, Path classpath, boolean systemFirst) {
         this(project, classpath);
         this.systemFirst = systemFirst;
+        addSystemPackageRoot("java");
+        addSystemPackageRoot("javax");
     }
 
     /**
diff --git a/src/main/org/apache/tools/ant/taskdefs/Available.java b/src/main/org/apache/tools/ant/taskdefs/Available.java
index 7e6d94bc7..f41b476b0 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Available.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Available.java
@@ -137,7 +137,7 @@ public class Available extends Task {
         }
 
         if (classpath != null) {
-            this.loader = new AntClassLoader(project, classpath, false);
+            this.loader = new AntClassLoader(project, classpath);
         }
 
         if ((classname != null) && !checkClass(classname)) {
diff --git a/src/main/org/apache/tools/ant/taskdefs/Definer.java b/src/main/org/apache/tools/ant/taskdefs/Definer.java
index 0fc8f5aeb..86af92d20 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Definer.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Definer.java
@@ -96,17 +96,12 @@ public abstract class Definer extends Task {
             throw new BuildException(msg);
         }
         try {
-            boolean systemFirst = false;
-            String bscp = project.getProperty("build.sysclasspath");
-            if (bscp != null && bscp.equals("only")) {
-                systemFirst = true;
-            }
             ClassLoader loader = null;
             AntClassLoader al = null;
             if (classpath != null) {
-                al = new AntClassLoader(project, classpath, systemFirst);
+                al = new AntClassLoader(project, classpath);
             } else {
-                al = new AntClassLoader(project, Path.systemClasspath, systemFirst);
+                al = new AntClassLoader(project, Path.systemClasspath);
             }
             // need to load Task via system classloader or the new
             // task we want to define will never be a Task but always
diff --git a/src/main/org/apache/tools/ant/taskdefs/Property.java b/src/main/org/apache/tools/ant/taskdefs/Property.java
index 0286ed06d..fcba143b4 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Property.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Property.java
@@ -214,7 +214,7 @@ public class Property extends Task {
             InputStream is = null;
 
             if (classpath != null) { 
-                cL = new AntClassLoader(project, classpath, false); 
+                cL = new AntClassLoader(project, classpath); 
             } else { 
                 cL = this.getClass().getClassLoader(); 
             } 
diff --git a/src/main/org/apache/tools/ant/taskdefs/SQLExec.java b/src/main/org/apache/tools/ant/taskdefs/SQLExec.java
index f1f872866..d1fd8a5c2 100644
--- a/src/main/org/apache/tools/ant/taskdefs/SQLExec.java
+++ b/src/main/org/apache/tools/ant/taskdefs/SQLExec.java
@@ -366,7 +366,7 @@ public class SQLExec extends Task {
                 log( "Loading " + driver + " using AntClassLoader with classpath " + classpath, 
                      Project.MSG_VERBOSE );
 
-                loader = new AntClassLoader(project, classpath, false);
+                loader = new AntClassLoader(project, classpath);
                 dc = loader.loadClass(driver);
             }
             else {
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/XMLValidateTask.java b/src/main/org/apache/tools/ant/taskdefs/optional/XMLValidateTask.java
index de367bf6b..cd7503484 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/XMLValidateTask.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/XMLValidateTask.java
@@ -262,8 +262,8 @@ public class XMLValidateTask extends Task {
             //Class readerImpl = null;
             //Class parserImpl = null;
             if (classpath != null) {
-                AntClassLoader loader = new AntClassLoader(project, classpath, false);
-                loader.addSystemPackageRoot("org.xml"); // needed to avoid conflict
+                AntClassLoader loader = new AntClassLoader(project, classpath);
+//                loader.addSystemPackageRoot("org.xml"); // needed to avoid conflict
                 readerClass = loader.loadClass(readerClassName);
                 AntClassLoader.initializeClass(readerClass);
             } else