diff --git a/docs/credits.txt b/docs/credits.txt
index 0a62e0d7a..540e51f10 100644
--- a/docs/credits.txt
+++ b/docs/credits.txt
@@ -67,7 +67,7 @@ Contributing Developers..............Meg O'Keefe Andrea / Plain Black
                                      Tabitha Zipperer / Plain Black
 
 The following are people/companies who didn't directly contribute
-to WebGUI, but who's work has made WebGUI possible:
+to WebGUI, but whose work has made WebGUI possible:
 
 
 Perl.................................Larry Wall / O'Reilly