diff --git a/Documentation/Configuration/ExtensionSettings/Index.rst b/Documentation/Configuration/ExtensionSettings/Index.rst
index efc2fe09..55b8fa78 100755
--- a/Documentation/Configuration/ExtensionSettings/Index.rst
+++ b/Documentation/Configuration/ExtensionSettings/Index.rst
@@ -22,10 +22,6 @@ Property:                               Data type:  Description:
 storeBackwardsCompatName                boolean     If set, the field `name` is populated with the values of the   1
                                                     fields `first_name`, `middle_name` and `last_name`.
 --------------------------------------  ----------  -------------------------------------------------------------  -------------------------
-backwardsCompatFormat                   string      Define the format how the name field is populated.             %1$s %3$s
-                                                    Use `%1$s` for the first name, `%2$s` for the middle name
-                                                    and `%3$s` for the last name.
---------------------------------------  ----------  -------------------------------------------------------------  -------------------------
 readOnlyNameField                       boolean     If set, the name field is set to read only which makes         1
                                                     absolutely sense if the value of the field is populated
                                                     automatically.
diff --git a/Tests/Unit/Domain/Model/Dto/SettingsTest.php b/Tests/Unit/Domain/Model/Dto/SettingsTest.php
index 806d44eb..25578a48 100644
--- a/Tests/Unit/Domain/Model/Dto/SettingsTest.php
+++ b/Tests/Unit/Domain/Model/Dto/SettingsTest.php
@@ -43,7 +43,6 @@ public function defaultSettingsAreAvailable()
     public function settingsAreSet()
     {
         $GLOBALS['TYPO3_CONF_VARS']['EXTENSIONS']['tt_address'] = [
-            'backwardsCompatFormat' => '%s%s',
             'storeBackwardsCompatName' => false,
             'readOnlyNameField' => false,
             'telephoneValidationPatternForPhp' => 'regex1',
diff --git a/ext_conf_template.txt b/ext_conf_template.txt
index 6f723f25..450310d8 100755
--- a/ext_conf_template.txt
+++ b/ext_conf_template.txt
@@ -1,6 +1,3 @@
-  # cat=basic; type=text; label=Backwards compatibility format: tt_address can use separate fields for first, middle, and last name. Every time a change is made to a name field tt_address writes the changes back to the internal old combined field. Here you can specify a format for this: use %1$s for the first name, %2$s for the middle name, and %3$s for the last name.
-backwardsCompatFormat = %1$s %3$s
-
   # cat=basic; type=boolean; label=Store backwards compatibility name in name field
 storeBackwardsCompatName = 1