diff --git a/headers/os/locale/LocaleRoster.h b/headers/os/locale/LocaleRoster.h
index 14089b8ac4..b4b2d379a7 100644
--- a/headers/os/locale/LocaleRoster.h
+++ b/headers/os/locale/LocaleRoster.h
@@ -42,6 +42,7 @@ class BLocaleRoster {
 		status_t GetDefaultTimeZone(BTimeZone**timezone) const;
 
 		void SetDefaultCountry(BCountry *) const;
+		void SetDefaultTimeZone(const char* zone) const;
 		void UpdateSettings(BMessage* newSettings);
 
 		status_t GetLanguage(const char* languageCode, BLanguage** _language)
diff --git a/src/kits/locale/LocaleRoster.cpp b/src/kits/locale/LocaleRoster.cpp
index 4ebe416c02..41c992f671 100644
--- a/src/kits/locale/LocaleRoster.cpp
+++ b/src/kits/locale/LocaleRoster.cpp
@@ -37,6 +37,7 @@
 
 // ICU includes
 #include <unicode/locid.h>
+#include <unicode/timezone.h>
 
 
 /*
@@ -544,6 +545,13 @@ BLocaleRoster::SetDefaultCountry(BCountry* newDefault) const
 }
 
 
+void
+BLocaleRoster::SetDefaultTimeZone(const char* zone) const
+{
+	TimeZone::adoptDefault(TimeZone::createTimeZone(zone));
+}
+
+
 void
 BLocaleRoster::UpdateSettings(BMessage* newSettings)
 {
diff --git a/src/preferences/time/ZoneView.cpp b/src/preferences/time/ZoneView.cpp
index a13aed96a7..2d5a085ca6 100644
--- a/src/preferences/time/ZoneView.cpp
+++ b/src/preferences/time/ZoneView.cpp
@@ -374,5 +374,7 @@ TimeZoneView::SetTimeZone(const char *zone)
 {
 	putenv(BString("TZ=").Append(zone).String());
 	tzset();
+
+	be_locale_roster->SetDefaultTimeZone(zone);
 }