diff --git a/source/c02/p14_combine_and_concatenate_strings.rst b/source/c02/p14_combine_and_concatenate_strings.rst
index cc2803a8..dbfa37b2 100644
--- a/source/c02/p14_combine_and_concatenate_strings.rst
+++ b/source/c02/p14_combine_and_concatenate_strings.rst
@@ -149,7 +149,7 @@
                 yield ''.join(parts)
                 parts = []
                 size = 0
-            yield ''.join(parts)
+        yield ''.join(parts)
 
     # 结合文件操作
     with open('filename', 'w') as f: