1 files changed, 1 insertions, 1 deletions
diff --git a/activemodel/Rakefile b/activemodel/Rakefile
index 0372c7a03e..0a10912695 100755
--- a/activemodel/Rakefile
+++ b/activemodel/Rakefile
@@ -14,7 +14,7 @@ namespace :test do
   task :isolated do
     ruby = File.join(*RbConfig::CONFIG.values_at('bindir', 'RUBY_INSTALL_NAME'))
     Dir.glob("#{dir}/test/**/*_test.rb").all? do |file|
-      system(ruby, '-w', "-I#{dir}/lib", "-I#{dir}/test", file)
+      sh(ruby, '-w', "-I#{dir}/lib", "-I#{dir}/test", file)
     end or raise "Failures"
   end
 end