diff --git a/param/__init__.py b/param/__init__.py
index aca01c823..76f7702af 100644
--- a/param/__init__.py
+++ b/param/__init__.py
@@ -1014,6 +1014,10 @@ def _validate(self, val):
                              (self.name,len(val),self.length))
 
 
+    @classmethod
+    def serialize(cls, value):
+        return list(value) # As JSON has no tuple representation
+
     @classmethod
     def deserialize(cls, value):
         return tuple(value) # As JSON has no tuple representation