diff --git a/anselme/ast/Flush.lua b/anselme/ast/Flush.lua
index f8e47b5..a3abb17 100644
--- a/anselme/ast/Flush.lua
+++ b/anselme/ast/Flush.lua
@@ -8,10 +8,6 @@ local Flush = ast.abstract.Node {
 
 	init = function(self) end,
 
-	_hash = function(self)
-		return "flush"
-	end,
-
 	_format = function(self)
 		return "\n"
 	end,
diff --git a/anselme/ast/Nil.lua b/anselme/ast/Nil.lua
index 984c8e3..cdc488b 100644
--- a/anselme/ast/Nil.lua
+++ b/anselme/ast/Nil.lua
@@ -6,10 +6,6 @@ return ast.abstract.Node {
 
 	init = function(self) end,
 
-	_hash = function(self)
-		return "nil"
-	end,
-
 	_format = function(self)
 		return "()"
 	end,