--- a/python/mozbuild/mozbuild/configure/options.py
+++ b/python/mozbuild/mozbuild/configure/options.py
@@ -365,16 +365,20 @@ class Option(object):
                         "'%s' is not one of %s"
                         % (val, ', '.join("'%s'" % c for c in self.choices)))
 
             if relative_result is not None:
                 values = PositiveOptionValue(relative_result, origin=origin)
 
         return values
 
+    def __repr__(self):
+        return '<%s.%s [%s]>' % (self.__class__.__module__,
+                                 self.__class__.__name__, self.option)
+
 
 class CommandLineHelper(object):
     '''Helper class to handle the various ways options can be given either
     on the command line of through the environment.
 
     For instance, an Option('--foo', env='FOO') can be passed as --foo on the
     command line, or as FOO=1 in the environment *or* on the command line.