diff --git a/app/models/quizzes/quiz.rb b/app/models/quizzes/quiz.rb
index 742322ab9d8..f67375d81b2 100644
--- a/app/models/quizzes/quiz.rb
+++ b/app/models/quizzes/quiz.rb
@@ -309,7 +309,7 @@ class Quizzes::Quiz < ActiveRecord::Base
     # If the quiz suddenly changes from non-graded to graded,
     # then this will update the existing submissions to reflect quiz
     # scores in the gradebook.
-    self.quiz_submissions.each { |s| s.save }
+    self.quiz_submissions.each { |s| s.save! }
   end
 
   attr_accessor :saved_by
diff --git a/spec/models/quizzes/quiz_spec.rb b/spec/models/quizzes/quiz_spec.rb
index 4875a5ed1fe..8319ab6846a 100644
--- a/spec/models/quizzes/quiz_spec.rb
+++ b/spec/models/quizzes/quiz_spec.rb
@@ -972,7 +972,7 @@ describe Quizzes::Quiz do
       it "should not allow quiz points higher than allowable by postgres" do
         q = Quizzes::Quiz.new(:points_possible => 2000000001)
         q.valid?.should == false
-        q.errors.on(:points_possible).should == "must be less than or equal to 2000000000"
+        Array(q.errors[:points_possible]).should == ["must be less than or equal to 2000000000"]
       end
     end