diff --git a/lib/origami/graphics/instruction.rb b/lib/origami/graphics/instruction.rb
index 7e667c4..14e29f3 100644
--- a/lib/origami/graphics/instruction.rb
+++ b/lib/origami/graphics/instruction.rb
@@ -28,7 +28,7 @@ class PDF::Instruction
         attr_reader :operator
         attr_accessor :operands
 
-        @insns = Hash.new(operands: [], render: lambda{})
+        @insns = Hash.new({operands: [], render: lambda{}})
 
         def initialize(operator, *operands)
             @operator = operator