diff --git a/extensions/jython/module/MOD-INF/controller.js b/extensions/jython/module/MOD-INF/controller.js
index 429a69aba..a0ff6dcf2 100644
--- a/extensions/jython/module/MOD-INF/controller.js
+++ b/extensions/jython/module/MOD-INF/controller.js
@@ -32,8 +32,17 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
 function init() {
-    // Packages.java.lang.System.err.println("Initializing jython extension");
-    
+    var libPath = new Packages.java.io.File(module.getPath(), "MOD-INF/lib/jython/").getCanonicalPath();
+
+    var S = Packages.java.lang.System;
+    var currentLibPath = S.getProperty("python.path");
+    if (currentLibPath == null) {
+        currentLibPath = libPath;
+    } else if (currentLibPath.indexOf(libPath) < 0) {
+        currentLibPath = currentLibPath + Packages.java.io.File.pathSeparator + libPath;
+    }
+    S.setProperty("python.path", currentLibPath);
+        
     Packages.com.google.refine.expr.MetaParser.registerLanguageParser(
         "jython",
         "Jython",
diff --git a/refine b/refine
index 56e39d8dc..176e25d4a 100755
--- a/refine
+++ b/refine
@@ -910,13 +910,6 @@ if [ -z "$REFINE_VERBOSITY" ] ; then
 fi
 add_option "-Drefine.verbosity=$REFINE_VERBOSITY"
 
-if [ -z "$JYTHONPATH" ] ; then
-    JYTHONPATH="$REFINE_WEBAPP/WEB-INF/lib/jython"
-else
-    JYTHONPATH="$REFINE_WEBAPP/WEB-INF/lib/jython${SEP}$JYTHONPATH"
-fi
-add_option "-Dpython.path=$JYTHONPATH"
-
 # ----- Respond to the action given --------------------------------------------
 
 case "$ACTION" in
diff --git a/server/src/com/google/refine/Refine.java b/server/src/com/google/refine/Refine.java
index 855c51f60..b6383c430 100644
--- a/server/src/com/google/refine/Refine.java
+++ b/server/src/com/google/refine/Refine.java
@@ -94,11 +94,6 @@ public class Refine {
         
         // tell the signpost library to log
         //System.setProperty("debug","true");
-            
-        // if not already set, make sure jython can find its python stuff
-        if (System.getProperty("python.path") == null) {
-            System.setProperty("python.path","lib/python");
-        }
         
         // set the log verbosity level
         org.apache.log4j.Logger.getRootLogger().setLevel(Level.toLevel(Configurations.get("refine.verbosity","info")));