diff --git a/pandora_server/ChangeLog b/pandora_server/ChangeLog
index 9b6e6e57ed..5c0dd7e812 100644
--- a/pandora_server/ChangeLog
+++ b/pandora_server/ChangeLog
@@ -1,3 +1,7 @@
+2011-09-22  Junichi Satoh <junichi@rworks.jp>
+
+	* pandora_server_installer: Fixed invalid group settings.
+
 2011-09-15  Vanessa Gil  <vanessa.gil@artica.es>
 
 	* pandora_server/util/pandora_manage.pl: Fixed bad behaviour of several
diff --git a/pandora_server/pandora_server_installer b/pandora_server/pandora_server_installer
index ee4751bf25..7578d41055 100755
--- a/pandora_server/pandora_server_installer
+++ b/pandora_server/pandora_server_installer
@@ -216,15 +216,21 @@ perl-TimeDate perl-XML-Simple perl-XML-Twig perl-libwww-perl mysql-client perl-S
 			id -g wwwrun 2> /dev/null
 			if [ $? -eq 0 ]
 			then
-				chown -R pandora:www $PANDORA_SPOOL
+				chown -R pandora:wwwrun $PANDORA_SPOOL
 			else
-				id -g apache 2> /dev/null
+				id -g www 2> /dev/null
 				if [ $? -eq 0 ]
 				then
-					chown -R pandora:apache $PANDORA_SPOOL
+					chown -R pandora:www $PANDORA_SPOOL
 				else
-					echo "No web server user found, some functionality might not perform correctly"
-					chown -R pandora:root $PANDORA_SPOOL
+					id -g apache 2> /dev/null
+					if [ $? -eq 0 ]
+					then
+						chown -R pandora:apache $PANDORA_SPOOL
+					else
+						echo "No web server user found, some functionality might not perform correctly"
+						chown -R pandora:root $PANDORA_SPOOL
+					fi
 				fi
 			fi
 		fi