Fixed a typo.
diff --git a/Doc/library/struct.rst b/Doc/library/struct.rst
index 63bf9b1..d29bd7b 100644
--- a/Doc/library/struct.rst
+++ b/Doc/library/struct.rst
@@ -50,7 +50,7 @@
.. function:: unpack_from(fmt, buffer[,offset=0])
- Unpack the *buffer* according to tthe given format. The result is a tuple even
+ Unpack the *buffer* according to the given format. The result is a tuple even
if it contains exactly one item. The *buffer* must contain at least the amount
of data required by the format (``len(buffer[offset:])`` must be at least
``calcsize(fmt)``).