diff --git a/app/src/main/resources/rules.txt b/app/src/main/resources/rules.txt
index e5d69af..8be9487 100644
--- a/app/src/main/resources/rules.txt
+++ b/app/src/main/resources/rules.txt
@@ -33,7 +33,7 @@ client_signin = ^SIGNIN ([A-Za-z0-9]{2,20}) ([^ !]{5,50})\r\n$
 client_signup = ^SIGNUP ([A-Za-z0-9]{2,20}) ([^ !]{5,50})\r\n$
 ffe_signresult = ^(SIGN_OK|SIGN_ERROR)\r\n$
 client_filelist = ^FILELIST\r\n$
-ffe_filelistresult = ^FILES(( [^ !]{1,20})!([0-9]{1,10})){0,50}$
+ffe_filelistresult = ^FILES( ([^ !]{1,20})!([0-9]{1,10})){0,50}$
 client_savefile = ^SAVE_FILE ([^ !]{1,20}) ([0-9]{1,10})\r\n$
 ffe_savefileresult = ^(SAVEFILE_OK|SAVEFILE_ERROR)\r\n$
 client_getfile = ^GETFILE ([^ !]{1,20})\r\n$