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-rw-r--r--Doc/library/zlib.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index 70e1483..96e723b 100644
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -221,7 +221,7 @@ Decompression objects support the following methods, and two attributes:
:meth:`decompress` method. Some of the input data may be preserved in internal
buffers for later processing.
- If the optional parameter *max_length* is supplied then the return value will be
+ If the optional parameter *max_length* is non-zero then the return value will be
no longer than *max_length*. This may mean that not all of the compressed input
can be processed; and unconsumed data will be stored in the attribute
:attr:`unconsumed_tail`. This string must be passed to a subsequent call to