diff --git a/booking.helper.inc b/booking.helper.inc
index 1590afc..d706cde 100644
--- a/booking.helper.inc
+++ b/booking.helper.inc
@@ -1611,7 +1611,7 @@ function _booking_readinggroup_email_listing($node) {
 	global $event;
 	$rows = array();
 	$header = array("First Name", "Last Name", "Phone Number");
-	$attributes = array("style" => "border-spacing: 10px 0;");
+	$attributes = array("style" => "border-collapse: separate; border-spacing: 20px 0;");
 
 	//display study session data if enabled
 	if (variable_get('booking_enable_studygroups', 0) == 0) {