diff --git a/lib/thor/base.rb b/lib/thor/base.rb
index 2e7fc6a64..4a98bba40 100644
--- a/lib/thor/base.rb
+++ b/lib/thor/base.rb
@@ -644,7 +644,7 @@ def from_superclass(method, default = nil)
 
       # A flag that makes the process exit with status 1 if any error happens.
       def exit_on_failure?
-        false
+        true
       end
 
       #
diff --git a/spec/helper.rb b/spec/helper.rb
index fa3bd0080..96005a3c1 100644
--- a/spec/helper.rb
+++ b/spec/helper.rb
@@ -44,6 +44,10 @@
     ARGV.replace []
   end
 
+  config.before(:each) do
+    allow_any_instance_of(Thor::Base::ClassMethods).to receive(:exit_on_failure?).and_return(false)
+  end
+
   config.expect_with :rspec do |c|
     c.syntax = :expect
   end