diff --git a/user-doc/extract b/user-doc/extract
index 1af0632b07948773d286ed9cadecb36e851caf0e..9dedfed57edff70d07dfccc3401eaa99d52cc3d8 100755
--- a/user-doc/extract
+++ b/user-doc/extract
@@ -48,7 +48,7 @@ EOF
 
   cat << EOF
 
-\note This command line tool is implemented as a shell script. It's help message is pasted below:
+\note This command line tool is implemented as a shell script. Its help message is pasted below:
 
 \verbatim
 EOF