diff --git a/THANKS b/THANKS
index 2313e1a2..b9c3df4f 100644
--- a/THANKS
+++ b/THANKS
@@ -151,7 +151,7 @@ Wilfredo Sanchez            wsanchez@apple.com
 Wolfgang Mueller            Wolfgang.Mueller@cui.unige.ch
 
 Many people are not named here because we lost track of them.  We
-thank them!  Please, help us keeping this list up to date.
+thank them!  Please, help us keep this list up-to-date.
 
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