diff --git a/lib/vagrant/provisioners/chef_solo.rb b/lib/vagrant/provisioners/chef_solo.rb
index 828af3cfd..9d81517cb 100644
--- a/lib/vagrant/provisioners/chef_solo.rb
+++ b/lib/vagrant/provisioners/chef_solo.rb
@@ -59,9 +59,9 @@ solo
 
         # We're lucky that ruby's string and array syntax for strings is the
         # same as JSON, so we can just convert to JSON here and use that
-        result = result.to_s if result.length == 1
+        result = result[0].to_s if result.length == 1
         result.to_json
       end
     end
   end
-end
\ No newline at end of file
+end