diff --git a/README.md b/README.md
index 1dcb4d3..2f32802 100644
--- a/README.md
+++ b/README.md
@@ -277,7 +277,6 @@ an instance of the `PartnerError` class and `puts` out the result of calling
 
 At this point, the code in `custom_errors.rb` should look like this:
 
-```ruby
 class Person
   attr_accessor :partner, :name
 
diff --git a/lib/custom_errors.rb b/lib/custom_errors.rb
index 53431de..3fd32fe 100644
--- a/lib/custom_errors.rb
+++ b/lib/custom_errors.rb
@@ -7,15 +7,24 @@ def initialize(name)
 
   def get_married(person)
     self.partner = person
-    person.partner = self
+    if person.class != Person
+      begin
+        raise PartnerError
+      rescue PartnerError => error
+        puts error.message
+      end
+    else
+      person.partner = self
+    end
   end
 
+  class PartnerError < StandardError
+    def message
+    "you must give the get_married method an argument of an instance of the person class!"
+    end
+  end
 end
 
 beyonce = Person.new("Beyonce")
 beyonce.get_married("Jay-Z")
 puts beyonce.name
-
-
-
-