diff --git a/lib/liquid/self_drop.rb b/lib/liquid/self_drop.rb
index 2f54fd38..045653a5 100644
--- a/lib/liquid/self_drop.rb
+++ b/lib/liquid/self_drop.rb
@@ -31,7 +31,7 @@ module Liquid
       @self_context.variable_defined?(key)
     end
 
-    def context=(_); end
+    undef context
 
     def to_liquid
       self