diff --git a/extensions/jython/.classpath b/extensions/jython/.classpath
index 9950e92e2..b8e1447c7 100644
--- a/extensions/jython/.classpath
+++ b/extensions/jython/.classpath
@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<classpathentry combineaccessrules="false" kind="src" path="/grefine"/>
-	<classpathentry kind="lib" path="module/MOD-INF/lib/jython-2.5.1.jar"/>
-	<classpathentry kind="output" path="module/MOD-INF/classes"/>
-</classpath>
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/grefine"/>
+	<classpathentry kind="lib" path="module/MOD-INF/lib/jython-2.5.1.jar"/>
+	<classpathentry kind="output" path="module/MOD-INF/classes"/>
+</classpath>