diff --git a/config/backup/backup.pl b/config/backup/backup.pl
index bed5952de..afd8d1663 100644
--- a/config/backup/backup.pl
+++ b/config/backup/backup.pl
@@ -247,7 +247,7 @@ main() {
 			local filename="/var/ipfire/backup/${NOW}.ipf"
 
 			if make_backup "${filename}"; then
-				/usr/local/bin/backupiso "${NOW}" &
+				/usr/local/bin/backupiso "${NOW}"
 			fi
 			;;
 
diff --git a/html/cgi-bin/backup.cgi b/html/cgi-bin/backup.cgi
index 84c015314..1b1ccb4a8 100644
--- a/html/cgi-bin/backup.cgi
+++ b/html/cgi-bin/backup.cgi
@@ -119,7 +119,7 @@ if ( $cgiparams{'ACTION'} eq "backup" )
 	} elsif ( $cgiparams{'BACKUPLOGS'} eq "exclude" ) {
 		&General::system("/usr/local/bin/backupctrl", "exclude");
 	} elsif ( $cgiparams{'BACKUPLOGS'} eq "iso" ) {
-		&General::system("/usr/local/bin/backupctrl", "iso");
+		&General::system_background("/usr/local/bin/backupctrl", "iso");
 	}
 }
 if ( $cgiparams{'ACTION'} eq "addonbackup" )