diff --git a/man/cwebp.1 b/man/cwebp.1
index dfa02333..1dd27f66 100644
--- a/man/cwebp.1
+++ b/man/cwebp.1
@@ -36,8 +36,8 @@ is 75.
 .BI \-z " int
 Switch on \fBlossless\fP compression mode with the specified level between 0
 and 9, with level 0 being the fastest, 9 being the slowest. Fast mode
-produce larger file size than fast ones. A good default is \-z 6.
-This option is actually a shortcut for some predefined setting for quality
+produces larger file size than slower ones. A good default is \-z 6.
+This option is actually a shortcut for some predefined settings for quality
 and method. If options \-q  or \-m are subsequently used, they will invalidate
 the effect of this \-z option.
 .br