diff --git a/CHANGELOG.md b/CHANGELOG.md
index d00e6558..7eeb8d87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ System:
 
 * The daily backup will now email the administrator if there is a problem.
 * Expiring TLS (SSL) certificates are now automatically renewed via Let's Encrypt.
+* File ownership for the installed Roundcube files is fixed.
 
 v0.15a (January 9, 2016)
 ------------------------
diff --git a/setup/webmail.sh b/setup/webmail.sh
index fafac75f..5b7eb073 100755
--- a/setup/webmail.sh
+++ b/setup/webmail.sh
@@ -39,7 +39,7 @@ HASH=4513227bd64eb8564f056817341b1dfe478e215e
 VACATION_SIEVE_VERSION=91ea6f52216390073d1f5b70b5f6bea0bfaee7e5
 PERSISTENT_LOGIN_VERSION=117fbd8f93b56b2bf72ad055193464803ef3bc36
 HTML5_NOTIFIER_VERSION=046eb388dd63b1ec77a3ee485757fc25ae9e684d
-UPDATE_KEY=$VERSION:$VACATION_SIEVE_VERSION:$PERSISTENT_LOGIN_VERSION:$HTML5_NOTIFIER_VERSION
+UPDATE_KEY=$VERSION:$VACATION_SIEVE_VERSION:$PERSISTENT_LOGIN_VERSION:$HTML5_NOTIFIER_VERSION:a
 needs_update=0 #NODOC
 if [ ! -f /usr/local/lib/roundcubemail/version ]; then
 	# not installed yet #NODOC
@@ -54,7 +54,7 @@ if [ $needs_update == 1 ]; then
 		https://downloads.sourceforge.net/project/roundcubemail/roundcubemail/$VERSION/roundcubemail-$VERSION.tar.gz \
 		$HASH \
 		/tmp/roundcube.tgz
-	tar -C /usr/local/lib -zxf /tmp/roundcube.tgz
+	tar -C /usr/local/lib --no-same-owner -zxf /tmp/roundcube.tgz
 	rm -rf /usr/local/lib/roundcubemail
 	mv /usr/local/lib/roundcubemail-$VERSION/ /usr/local/lib/roundcubemail
 	rm -f /tmp/roundcube.tgz