1 files changed, 4 insertions, 4 deletions
diff --git a/spec/ruby/core/string/shared/replace.rb b/spec/ruby/core/string/shared/replace.rb
index 9f5446fbbe..a583b88b5a 100644
--- a/spec/ruby/core/string/shared/replace.rb
+++ b/spec/ruby/core/string/shared/replace.rb
@@ -62,14 +62,14 @@ describe :string_replace, shared: true do
     lambda { "hello".send(@method, mock('x')) }.should raise_error(TypeError)
   end
 
-  it "raises a RuntimeError on a frozen instance that is modified" do
+  it "raises a #{frozen_error_class} on a frozen instance that is modified" do
     a = "hello".freeze
-    lambda { a.send(@method, "world") }.should raise_error(RuntimeError)
+    lambda { a.send(@method, "world") }.should raise_error(frozen_error_class)
   end
 
   # see [ruby-core:23666]
-  it "raises a RuntimeError on a frozen instance when self-replacing" do
+  it "raises a #{frozen_error_class} on a frozen instance when self-replacing" do
     a = "hello".freeze
-    lambda { a.send(@method, a) }.should raise_error(RuntimeError)
+    lambda { a.send(@method, a) }.should raise_error(frozen_error_class)
   end
 end