diff --git a/Foundation/CPArray.j b/Foundation/CPArray.j
index da1a28f98..cb4951ad6 100755
--- a/Foundation/CPArray.j
+++ b/Foundation/CPArray.j
@@ -1075,7 +1075,7 @@
     while (index != CPNotFound)
     {
         [self removeObjectAtIndex:index];
-        index = [anIndexSet indexSmallerThanIndex:index];
+        index = [anIndexSet indexLessThanIndex:index];
     }
 }