diff --git a/src/core/core.coffee b/src/core/core.coffee
index 5bdc637..a0ff5a6 100644
--- a/src/core/core.coffee
+++ b/src/core/core.coffee
@@ -1,3 +1,4 @@
+'use strict'
 #define the OS object
 self = this
 self.OS or=