diff --git a/apis/builder/turtle.lua b/apis/builder/turtle.lua
index caa7ae4..d090719 100644
--- a/apis/builder/turtle.lua
+++ b/apis/builder/turtle.lua
@@ -119,8 +119,12 @@ function supplyPage:enable(builder)
 
   Event.addNamedTimer('supplyRefresh', 6, true, function()
     if self.enabled then
+debug('timer')
       self.builder:autocraft(self.builder:getSupplies())
-      self:refresh()
+      pcall(function()
+        debug('refreshing')
+        self:refresh()
+      end)
       self.statusBar:timedStatus('Refreshed ', 2)
       self:sync()
     end
@@ -129,6 +133,7 @@ function supplyPage:enable(builder)
 end
 
 function supplyPage:disable()
+  debug('canceling')
   Event.cancelNamedTimer('supplyRefresh')
 end