diff --git a/doc/documentation.html b/doc/documentation.html
index 464047b9..a56464e0 100644
--- a/doc/documentation.html
+++ b/doc/documentation.html
@@ -221,7 +221,7 @@
-M
- Enable loose mid-side coding (only for stereo streams). Like -m but the encoder adaptively switches between independent and mid-side coding, which is faster but yields less compression.
+ Enable loose mid-side coding (only for stereo streams). Like -m but the encoder adaptively switches between independent and mid-side coding, which is faster but yields less compression than -m (which does an exhaustive search).
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