diff --git a/account.inc.php b/account.inc.php
index 94c831d..7984207 100644
--- a/account.inc.php
+++ b/account.inc.php
@@ -215,7 +215,7 @@ function account_add_role($accounts_id, $roles_id, $conferences_id, $password =
 		return "invalidaccount";
 	}
 	if(mysql_result(mysql_query("SELECT COUNT(*) FROM roles WHERE id = $roles_id"), 0) != 1){
-		return "invalidrole($roles_id)";
+		return "invalidrole";
 	}
 	if(mysql_result(mysql_query("SELECT COUNT(*) FROM conferences WHERE id = $conferences_id"), 0) != 1){
 		return "invalidconference";
@@ -303,7 +303,7 @@ function account_add_role($accounts_id, $roles_id, $conferences_id, $password =
 				$error = '';
 			}
 			else {
-				$error = 'invalidrole(invite only)';
+				$error = 'invalidrole(invite_only)';
 			}
 			break;
 	}
diff --git a/api.php b/api.php
index e67a911..2a00b30 100644
--- a/api.php
+++ b/api.php
@@ -792,10 +792,12 @@ switch($request[0]) {
 						updateSessionRoles();
 						break;
 					case "invalidrole": $ret['status']="error"; $ret['error']="Invalid role"; break;
+					case "invalidrole(invite only)": $ret['status']="error"; $ret['error']="Invalid role - registation by invite only"; break;
+					case "invalidrole(account_add_role_allowed)": $ret['status']="error"; $ret['error']="Invalid role - account_add_role_allowed said no"; break;
 					case "invalidaccount": $ret['status']="error"; $ret['error']="Invalid account"; break;
 					case "invalidconference": $ret['status']="error"; $ret['error']="Invalid conference"; break;
 					case "invalidpassword": $ret['status']="error"; $ret['error']="Invalid password for role"; break;
-					default: $ret['status']="error"; $ret['error']="unknown role add error";
+					default: $ret['status']="error"; $ret['error']="unknown role add error. addstatus=[$addstatus]";
 				}
 			break;