diff --git a/support/fc_sort.py b/support/fc_sort.py
index 9e38a9ebe..3a35553bf 100644
--- a/support/fc_sort.py
+++ b/support/fc_sort.py
@@ -108,7 +108,7 @@ class FileContext():
         return 0
 
     def __lt__(self, other):
-        return self._compare(self, other) is -1
+        return self._compare(self, other) == -1
 
     def __str__(self):
         if self.file_type: