diff --git a/install-dev/data/xml/gender.xml b/install-dev/data/xml/gender.xml
index 242928b43..fd324a60d 100644
--- a/install-dev/data/xml/gender.xml
+++ b/install-dev/data/xml/gender.xml
@@ -7,6 +7,5 @@
     <gender id="Mr" type="0"/>
     <gender id="Ms" type="1"/>
     <gender id="Miss" type="1"/>
-    <gender id="Unknown" type="2"/>
   </entities>
 </entity_gender>
diff --git a/install-dev/langs/de/data/gender.xml b/install-dev/langs/de/data/gender.xml
index 23195ef22..9f9c63786 100644
--- a/install-dev/langs/de/data/gender.xml
+++ b/install-dev/langs/de/data/gender.xml
@@ -3,5 +3,4 @@
   <gender id="Mr" name="Herr"/>
   <gender id="Ms" name="Frau"/>
   <gender id="Miss" name="Miss"/>
-  <gender id="Unknown" name="Unbekannte"/>
 </entity_gender>
diff --git a/install-dev/langs/en/data/gender.xml b/install-dev/langs/en/data/gender.xml
index 74a7e4e79..023a5e78d 100644
--- a/install-dev/langs/en/data/gender.xml
+++ b/install-dev/langs/en/data/gender.xml
@@ -3,5 +3,4 @@
   <gender id="Mr" name="Mr."/>
   <gender id="Ms" name="Ms."/>
   <gender id="Miss" name="Miss"/>
-  <gender id="Unknown" name="Unknown"/>
 </entity_gender>
diff --git a/install-dev/langs/es/data/gender.xml b/install-dev/langs/es/data/gender.xml
index 9d5398fe2..506554ad3 100644
--- a/install-dev/langs/es/data/gender.xml
+++ b/install-dev/langs/es/data/gender.xml
@@ -3,5 +3,4 @@
   <gender id="Mr" name="Sr."/>
   <gender id="Ms" name="Sra."/>
   <gender id="Miss" name="Miss"/>
-  <gender id="Unknown" name="Desconocido"/>
 </entity_gender>
diff --git a/install-dev/langs/fr/data/gender.xml b/install-dev/langs/fr/data/gender.xml
index 2e106b983..2a62da434 100644
--- a/install-dev/langs/fr/data/gender.xml
+++ b/install-dev/langs/fr/data/gender.xml
@@ -3,5 +3,4 @@
   <gender id="Mr" name="M."/>
   <gender id="Ms" name="Mme"/>
   <gender id="Miss" name="Melle"/>
-  <gender id="Unknown" name="Inconnu"/>
 </entity_gender>
diff --git a/install-dev/langs/it/data/gender.xml b/install-dev/langs/it/data/gender.xml
index 268aff4df..cd5188609 100644
--- a/install-dev/langs/it/data/gender.xml
+++ b/install-dev/langs/it/data/gender.xml
@@ -3,5 +3,4 @@
   <gender id="Mr" name="Sig."/>
   <gender id="Ms" name="Sig.ra"/>
   <gender id="Miss" name="Miss"/>
-  <gender id="Unknown" name="Sconosciuto"/>
 </entity_gender>