diff --git a/test/helper.rb b/test/helper.rb
index 4d8c8185b..636c31b26 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -455,35 +455,35 @@ def rakefile_verbose
     rakefile <<-VERBOSE
 task :standalone_verbose_true do
   verbose true
-  sh "ruby -e '0'"
+  sh "#{RUBY} -e '0'"
 end
 
 task :standalone_verbose_false do
   verbose false
-  sh "ruby -e '0'"
+  sh "#{RUBY} -e '0'"
 end
 
 task :inline_verbose_default do
-  sh "ruby -e '0'"
+  sh "#{RUBY} -e '0'"
 end
 
 task :inline_verbose_false do
-  sh "ruby -e '0'", :verbose => false
+  sh "#{RUBY} -e '0'", :verbose => false
 end
 
 task :inline_verbose_true do
-  sh "ruby -e '0'", :verbose => true
+  sh "#{RUBY} -e '0'", :verbose => true
 end
 
 task :block_verbose_true do
   verbose(true) do
-    sh "ruby -e '0'"
+    sh "#{RUBY} -e '0'"
   end
 end
 
 task :block_verbose_false do
   verbose(false) do
-    sh "ruby -e '0'"
+    sh "#{RUBY} -e '0'"
   end
 end
     VERBOSE
diff --git a/test/test_rake_functional.rb b/test/test_rake_functional.rb
index 9b3afedc4..9872ae34f 100644
--- a/test/test_rake_functional.rb
+++ b/test/test_rake_functional.rb
@@ -174,7 +174,7 @@ def test_inline_verbose_default_should_show_command
 
     rake "inline_verbose_default"
 
-    assert_match(/ruby -e/, @err)
+    assert_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_inline_verbose_true_should_show_command
@@ -182,7 +182,7 @@ def test_inline_verbose_true_should_show_command
 
     rake "inline_verbose_true"
 
-    assert_match(/ruby -e/, @err)
+    assert_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_inline_verbose_false_should_not_show_command
@@ -190,7 +190,7 @@ def test_inline_verbose_false_should_not_show_command
 
     rake "inline_verbose_false"
 
-    refute_match(/ruby -e/, @err)
+    refute_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_block_verbose_false_should_not_show_command
@@ -198,7 +198,7 @@ def test_block_verbose_false_should_not_show_command
 
     rake "block_verbose_false"
 
-    refute_match(/ruby -e/, @err)
+    refute_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_block_verbose_true_should_show_command
@@ -206,7 +206,7 @@ def test_block_verbose_true_should_show_command
 
     rake "block_verbose_true"
 
-    assert_match(/ruby -e/, @err)
+    assert_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_standalone_verbose_true_should_show_command
@@ -214,7 +214,7 @@ def test_standalone_verbose_true_should_show_command
 
     rake "standalone_verbose_true"
 
-    assert_match(/ruby -e/, @err)
+    assert_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_standalone_verbose_false_should_not_show_command
@@ -222,7 +222,7 @@ def test_standalone_verbose_false_should_not_show_command
 
     rake "standalone_verbose_false"
 
-    refute_match(/ruby -e/, @err)
+    refute_match(/#{Regexp.quote(RUBY)} -e/, @err)
   end
 
   def test_dry_run