#6332: fix word dupes throughout the source.
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 55fe957..3c482a1 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -328,7 +328,7 @@
warning is triggered repeatedly for the same source line, such as inside a
loop).
``module``
- Print each warning only only the first time it occurs in each module.
+ Print each warning only the first time it occurs in each module.
``once``
Print each warning only the first time it occurs in the program.
``error``