diff --git a/tests/common/test_encoding_handler.py b/tests/common/test_encoding_handler.py
index b8bdfc6..0c0bc30 100644
--- a/tests/common/test_encoding_handler.py
+++ b/tests/common/test_encoding_handler.py
@@ -152,8 +152,8 @@ def run_read(filename):
         raise ValueError('Reader is not closed outside context')
     if reader.name != filename:
         raise ValueError('Wrong filename {} after context'.format(reader.name))
-        if reader.isatty():
-            raise ValueError('Reader has become a tty!')
+    if reader.isatty():
+        raise ValueError('Reader has become a tty!')
 
     # compare text
     if sys.version_info.major <= 2:      # in python2 get encoded byte string