diff --git a/tests/treq.py b/tests/treq.py
index a953a928a..c2b38b857 100644
--- a/tests/treq.py
+++ b/tests/treq.py
@@ -51,7 +51,7 @@ def __init__(self, fname, expect):
         with open(self.fname, 'rb') as handle:
             self.data = handle.read()
         self.data = self.data.replace(b"\n", b"").replace(b"\\r\\n", b"\r\n")
-        self.data = self.data.replace(b"\\0", b"\000").replace(b"\\t", b"\t")
+        self.data = self.data.replace(b"\\0", b"\000").replace(b"\\n", b"\n").replace(b"\\t", b"\t")
         if b"\\" in self.data:
             raise AssertionError("Unexpected backslash in test data - only handling HTAB, NUL and CRLF")
 
@@ -273,7 +273,7 @@ def __init__(self, fname):
         with open(self.fname) as handle:
             self.data = handle.read()
         self.data = self.data.replace("\n", "").replace("\\r\\n", "\r\n")
-        self.data = self.data.replace("\\0", "\000").replace("\\t", "\t")
+        self.data = self.data.replace("\\0", "\000").replace("\\n", "\n").replace("\\t", "\t")
         if "\\" in self.data:
             raise AssertionError("Unexpected backslash in test data - only handling HTAB, NUL and CRLF")
         self.data = self.data.encode('latin1')