diff --git a/tests/test_patch.py b/tests/test_patch.py
index cbdaaec..577ee25 100644
--- a/tests/test_patch.py
+++ b/tests/test_patch.py
@@ -1426,8 +1426,7 @@ def test_svn_mixed_line_ends(self):
         self.assertEqual(results[0].header, expected_header)
 
     def test_huge_patch(self):
-        start_time = time.time()
-        text = """diff --git a/huge.file b/huge.file
+        text_parts = ["""diff --git a/huge.file b/huge.file
 index 0000000..1111111 100644
 --- a/huge.file
 +++ a/huge.file
@@ -1439,9 +1438,10 @@ def test_huge_patch(self):
 -44444444
 +55555555
 +66666666
-"""
-        for n in range(0, 1000000):
-            text += "+" + hex(n) + "\n"
+"""]
+        text_parts.extend("+" + hex(n) + "\n" for n in range(0, 1000000))
+        text = ''.join(text_parts)
+        start_time = time.time()
         result = list(wtp.patch.parse_patch(text))
         self.assertEqual(1, len(result))
         self.assertEqual(1000007, len(result[0].changes))