diff --git a/wrolpi/logging_extra.py b/wrolpi/logging_extra.py
index 939cb958..0bd1e4cc 100644
--- a/wrolpi/logging_extra.py
+++ b/wrolpi/logging_extra.py
@@ -8,6 +8,6 @@ class EmptyMessageFilter(logging.Filter):
         message = record.msg
         if not message:
             return False
-        if not message.strip():
+        if isinstance(message, str) and not message.strip():
             return False
         return True