diff --git a/htdocs/public/eventorganization/attendee_subscription.php b/htdocs/public/eventorganization/attendee_subscription.php
index 3d1ee6272cc..a18912da4ef 100644
--- a/htdocs/public/eventorganization/attendee_subscription.php
+++ b/htdocs/public/eventorganization/attendee_subscription.php
@@ -81,6 +81,9 @@ $email = GETPOST("email");
 $encodedid = GETPOST('id');
 $id = dol_decode($encodedid, $dolibarr_main_instance_unique_id);
 
+$project = new Project($db);
+
+
 // Getting 'securekey'.'id' from Post and decoding it
 $encodedsecurekeyandid = GETPOST('securekey', 'alpha');
 $securekeyandid = dol_decode($encodedsecurekeyandid, $dolibarr_main_instance_unique_id);
@@ -193,10 +196,11 @@ if (empty($reshook) && $action == 'add') {
 		$error++;
 		$errmsg .= $langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Email"))."<br>\n";
 	}
-	/*if (!GETPOST("societe")) {
+	// If the price has been set, name is required for the invoice
+	if (!GETPOST("societe") && !empty(floatval($project->price_registration))) {
 		$error++;
 		$errmsg .= $langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Societe"))."<br>\n";
-	}*/
+	}
 	if (GETPOST("email") && !isValidEmail(GETPOST("email"))) {
 		$error++;
 		$langs->load("errors");
@@ -350,7 +354,11 @@ print '<table class="border" summary="form to subscribe" id="tablesubscribe">'."
 // Email
 print '<tr><td>'.$langs->trans("Email").' <FONT COLOR="red">*</FONT></td><td><input type="text" name="email" maxlength="255" class="minwidth150" value="'.dol_escape_htmltag(GETPOST('email')).'"></td></tr>'."\n";
 // Company
-print '<tr id="trcompany" class="trcompany"><td>'.$langs->trans("Company").' </td><td><input type="text" name="societe" class="minwidth150" value="'.dol_escape_htmltag(GETPOST('societe')).'"></td></tr>'."\n";
+print '<tr id="trcompany" class="trcompany"><td>'.$langs->trans("Company");
+if(!empty(floatval($project->price_registration))){
+    print '<FONT COLOR="red">*</FONT>';
+}
+print ' </td><td><input type="text" name="societe" class="minwidth150" value="'.dol_escape_htmltag(GETPOST('societe')).'"></td></tr>'."\n";
 // Address
 print '<tr><td>'.$langs->trans("Address").'</td><td>'."\n";
 print '<textarea name="address" id="address" wrap="soft" class="quatrevingtpercent" rows="'.ROWS_3.'">'.dol_escape_htmltag(GETPOST('address', 'restricthtml'), 0, 1).'</textarea></td></tr>'."\n";