diff --git a/lib/liquid/drop.rb b/lib/liquid/drop.rb
index a348958..0814532 100644
--- a/lib/liquid/drop.rb
+++ b/lib/liquid/drop.rb
@@ -23,8 +23,6 @@ module Liquid
   class Drop
     attr_writer :context
 
-    EMPTY_STRING = ''.freeze
-
     # Catch all for the method
     def liquid_method_missing(_method)
       nil
@@ -32,7 +30,7 @@ module Liquid
 
     # called by liquid to invoke a drop
     def invoke_drop(method_or_key)
-      if method_or_key && method_or_key != EMPTY_STRING && self.class.invokable?(method_or_key)
+      if self.class.invokable?(method_or_key)
         send(method_or_key)
       else
         liquid_method_missing(method_or_key)