diff --git a/htdocs/comm/action/peruser.php b/htdocs/comm/action/peruser.php
index d4020f4df92..4204224faa5 100644
--- a/htdocs/comm/action/peruser.php
+++ b/htdocs/comm/action/peruser.php
@@ -109,6 +109,7 @@ if ($dateselect > 0)
 }
 
 $tmp=empty($conf->global->MAIN_DEFAULT_WORKING_HOURS)?'9-18':$conf->global->MAIN_DEFAULT_WORKING_HOURS;
+$tmp=str_replace(' ', '', $tmp);	// FIX 7533
 $tmparray=explode('-', $tmp);
 $begin_h = GETPOST('begin_h', 'int')!=''?GETPOST('begin_h', 'int'):($tmparray[0] != '' ? $tmparray[0] : 9);
 $end_h   = GETPOST('end_h', 'int')?GETPOST('end_h', 'int'):($tmparray[1] != '' ? $tmparray[1] : 18);
@@ -117,6 +118,7 @@ if ($end_h < 1 || $end_h > 24) $end_h = 18;
 if ($end_h <= $begin_h) $end_h = $begin_h + 1;
 
 $tmp=empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)?'1-5':$conf->global->MAIN_DEFAULT_WORKING_DAYS;
+$tmp=str_replace(' ', '', $tmp);	// FIX 7533
 $tmparray=explode('-', $tmp);
 $begin_d = GETPOST('begin_d', 'int')?GETPOST('begin_d', 'int'):($tmparray[0] != '' ? $tmparray[0] : 1);
 $end_d   = GETPOST('end_d', 'int')?GETPOST('end_d', 'int'):($tmparray[1] != '' ? $tmparray[1] : 5);