Index: src/main/org/apache/tools/ant/taskdefs/compilers/DefaultCompilerAdapter.java
===================================================================
--- src/main/org/apache/tools/ant/taskdefs/compilers/DefaultCompilerAdapter.java        (revision 529854)
+++ src/main/org/apache/tools/ant/taskdefs/compilers/DefaultCompilerAdapter.java        (revision 529855)
@@ -321,10 +321,10 @@
         if (attributes.getSource() != null && !assumeJava13()) {
             cmd.createArgument().setValue("-source");
             String source = attributes.getSource();
-            if ((assumeJava14() || assumeJava15())
-                && (source.equals("1.1") || source.equals("1.2"))) {
+            if (source.equals("1.1") || source.equals("1.2")) {
                 // support for -source 1.1 and -source 1.2 has been
-                // added with JDK 1.4.2 - and isn't present in 1.5.0 either
+                // added with JDK 1.4.2 - and isn't present in 1.5.0
+                // or 1.6.0 either
                 cmd.createArgument().setValue("1.3");
             } else {
                 cmd.createArgument().setValue(source);