diff --git a/src/java/timezones.properties b/src/java/timezones.properties
index 3e683e6b..614b64be 100644
--- a/src/java/timezones.properties
+++ b/src/java/timezones.properties
@@ -158,7 +158,7 @@ GMT\ -0800\ (Standard)\ /\ GMT\ -0700\ (Daylight)=America/Los_Angeles
 Mexico\ Standard\ Time=America/Mexico_City
 (GMT)\ Coordinated\ Universal\ Time=Greenwich Standard Time
 # Exchange 2010
-GMT\ Standard\ Time=GMT
+GMT\ Standard\ Time=Europe/London
 Central\ European\ Standard\ Time=Europe/Sarajevo
 Romance\ Standard\ Time=Europe/Paris
 W.\ Europe\ Standard\ Time=Europe/Berlin