diff --git a/lib/puppet/provider/sensu_check/json.rb b/lib/puppet/provider/sensu_check/json.rb
index bb201ae792..09441863a2 100644
--- a/lib/puppet/provider/sensu_check/json.rb
+++ b/lib/puppet/provider/sensu_check/json.rb
@@ -139,7 +139,7 @@ def notification=(value)
   end
 
   def refresh
-    conf['checks'][resource[:name]]['refresh']
+    conf['checks'][resource[:name]]['refresh'].to_s
   end
 
   def refresh=(value)