diff --git a/src/nm-active-connection.c b/src/nm-active-connection.c
index ae8e9e7ed2..7cfb0fe78a 100644
--- a/src/nm-active-connection.c
+++ b/src/nm-active-connection.c
@@ -436,7 +436,7 @@ _set_applied_connection_take (NMActiveConnection *self,
 	if (nm_setting_connection_get_master (s_con))
 		flags_val |= NM_ACTIVATION_STATE_FLAG_IS_SLAVE;
 
-	if (+_nm_connection_type_is_master (nm_setting_connection_get_connection_type (s_con)))
+	if (_nm_connection_type_is_master (nm_setting_connection_get_connection_type (s_con)))
 		flags_val |= NM_ACTIVATION_STATE_FLAG_IS_MASTER;
 
 	nm_active_connection_set_state_flags_full (self,