1 files changed, 2 insertions, 2 deletions
diff --git a/logging_utils.py b/logging_utils.py
index 0c7d193..a0131b1 100644
--- a/logging_utils.py
+++ b/logging_utils.py
@@ -269,7 +269,7 @@ class OutputMultiplexer(object):
                 open(filename, 'wb', buffering=0) for filename in filenames
             ]
         else:
-            if self.destination_bitv & OutputMultiplexer.FILENAMES:
+            if destination_bitv & OutputMultiplexer.FILENAMES:
                 raise ValueError(
                     "Filenames argument is required if bitv & FILENAMES"
                 )
@@ -278,7 +278,7 @@ class OutputMultiplexer(object):
         if handles is not None:
             self.h = [handle for handle in handles]
         else:
-            if self.destination_bitv & OutputMultiplexer.FILEHANDLES:
+            if destination_bitv & OutputMultiplexer.Destination.FILEHANDLES:
                 raise ValueError(
                     "Handle argument is required if bitv & FILEHANDLES"
                 )