1 files changed, 1 insertions, 1 deletions
diff --git a/test/M4.py b/test/M4.py
index f268174..0e7e809 100644
--- a/test/M4.py
+++ b/test/M4.py
@@ -61,7 +61,7 @@ line 3
 
 test.run()
 
-test.fail_test(test.read(test.workpath('aaa.x')) != "line 1\nmym4.py\nline 3\n")
+test.fail_test(test.read(test.workpath('aaa.x'), 'r') != "line 1\nmym4.py\nline 3\n")