diff --git a/cookbook/c02/p14_join_str.py b/cookbook/c02/p14_join_str.py
index f2c0be3..342c2f2 100644
--- a/cookbook/c02/p14_join_str.py
+++ b/cookbook/c02/p14_join_str.py
@@ -16,7 +16,7 @@ def combine(source, maxsize):
             yield ''.join(parts)
             parts = []
             size = 0
-        yield ' '.join(parts)
+    yield ''.join(parts)
 
 
 def sample():