diff --git a/Mac/Lib/ic.py b/Mac/Lib/ic.py
index abe5b69c598..3c0272cf1de 100644
--- a/Mac/Lib/ic.py
+++ b/Mac/Lib/ic.py
@@ -176,6 +176,9 @@ def keys(self):
 		return rv
 		
 	def has_key(self, key):
+		return self.__contains__(key)
+		
+	def __contains__(self, key):
 		try:
 			dummy = self.ic.ICFindPrefHandle(key, self.h)
 		except icglue.error: