diff --git a/lib/debug_util.dart b/lib/debug_util.dart
index 29095d82..e5f632d4 100644
--- a/lib/debug_util.dart
+++ b/lib/debug_util.dart
@@ -40,6 +40,7 @@ class LogCapturer {
   static LogCapturer? _inst;
 }
 
-String logFilename(String? filename) => shouldLogFileName ? "$filename" : "***";
+String logFilename(String? filename) =>
+    shouldLogFileName || filename == null ? "$filename" : "***";
 
 const bool shouldLogFileName = kDebugMode;