diff --git a/application/migrations/001_initial_database_structure.php b/application/migrations/001_specific_calendar_sync.php
similarity index 98%
rename from application/migrations/001_initial_database_structure.php
rename to application/migrations/001_specific_calendar_sync.php
index f22ee682..77cf788d 100644
--- a/application/migrations/001_initial_database_structure.php
+++ b/application/migrations/001_specific_calendar_sync.php
@@ -12,12 +12,15 @@
  * ---------------------------------------------------------------------------- */
 
 /**
- * Class Migration_Initial_database_structure
+ * Class Migration_Specific_calendar_sync
+ *
+ * Notice: This first migration got altered to include the creation of the initial database structure so that external
+ * SQL are not required.
  *
  * @property CI_DB_query_builder db
  * @property CI_DB_forge dbforge
  */
-class Migration_Initial_database_structure extends CI_Migration {
+class Migration_Specific_calendar_sync extends CI_Migration {
     /**
      * Upgrade method.
      */
diff --git a/application/migrations/007_add_availabilities_type_to_services_table.php b/application/migrations/007_add_service_availabilities_type.php
similarity index 91%
rename from application/migrations/007_add_availabilities_type_to_services_table.php
rename to application/migrations/007_add_service_availabilities_type.php
index baedfc63..459b4cf2 100644
--- a/application/migrations/007_add_availabilities_type_to_services_table.php
+++ b/application/migrations/007_add_service_availabilities_type.php
@@ -12,12 +12,12 @@
  * ---------------------------------------------------------------------------- */
 
 /**
- * Class Migration_Add_availabilities_type_to_services_table
+ * Class Migration_Add_service_availabilities_type
  *
  * @property CI_DB_query_builder db
  * @property CI_DB_forge dbforge
  */
-class Migration_Add_availabilities_type_to_services_table extends CI_Migration {
+class Migration_Add_service_availabilities_type extends CI_Migration {
     /**
      * Upgrade method.
      */
diff --git a/application/migrations/008_add_attendants_number_to_services_table.php b/application/migrations/008_add_service_attendants_number.php
similarity index 90%
rename from application/migrations/008_add_attendants_number_to_services_table.php
rename to application/migrations/008_add_service_attendants_number.php
index 7704f814..60266f11 100644
--- a/application/migrations/008_add_attendants_number_to_services_table.php
+++ b/application/migrations/008_add_service_attendants_number.php
@@ -12,12 +12,12 @@
  * ---------------------------------------------------------------------------- */
 
 /**
- * Class Migration_Add_attendants_number_to_services_table
+ * Class Migration_Add_service_attendants_number
  *
  * @property CI_DB_query_builder db
  * @property CI_DB_forge dbforge
  */
-class Migration_Add_attendants_number_to_services_table extends CI_Migration {
+class Migration_Add_service_attendants_number extends CI_Migration {
     /**
      * Upgrade method.
      */