diff --git a/test cases/common/185 escape and unicode/file.py b/test cases/common/185 escape and unicode/file.py
index af67a0950..40fa7ca48 100644
--- a/test cases/common/185 escape and unicode/file.py	
+++ b/test cases/common/185 escape and unicode/file.py	
@@ -6,5 +6,5 @@ import os
 with open(sys.argv[1]) as fh:
     content = fh.read().replace("{NAME}", sys.argv[2])
 
-with open(os.path.join(sys.argv[3]), 'w') as fh:
+with open(os.path.join(sys.argv[3]), 'w', errors='replace') as fh:
     fh.write(content)