diff --git a/lib/safe_yaml.rb b/lib/safe_yaml.rb
index 14ee609..a8f8e0a 100644
--- a/lib/safe_yaml.rb
+++ b/lib/safe_yaml.rb
@@ -3,7 +3,7 @@
 # This needs to be defined up front in case any internal classes need to base
 # their behavior off of this.
 module SafeYAML
-  YAML_ENGINE = defined?(YAML::ENGINE) ? YAML::ENGINE.yamler : "syck"
+  YAML_ENGINE = defined?(YAML::ENGINE) ? YAML::ENGINE.yamler : (defined?(Psych) && YAML == Psych ? "psych" : "syck")
 end
 
 require "set"