1 files changed, 4 insertions, 1 deletions
diff --git a/spec/ruby/command_line/dash_upper_e_spec.rb b/spec/ruby/command_line/dash_upper_e_spec.rb
index 39ffa001a3..5a83962583 100644
--- a/spec/ruby/command_line/dash_upper_e_spec.rb
+++ b/spec/ruby/command_line/dash_upper_e_spec.rb
@@ -1,3 +1,5 @@
+require_relative '../spec_helper'
+
 describe "ruby -E" do
   it "sets the external encoding with '-E external'" do
     result = ruby_exe("print Encoding.default_external", options: '-E euc-jp')
@@ -29,6 +31,7 @@ describe "ruby -E" do
   it "raises a RuntimeError if used with -U" do
     ruby_exe("p 1",
              options: '-Eascii:ascii -U',
-             args: '2>&1').should =~ /RuntimeError/
+             args: '2>&1',
+             exit_status: 1).should =~ /RuntimeError/
   end
 end