diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index b173f7912dd9f..52445134f0f6a 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1821,3 +1821,4 @@ DisabledResourceLinkUser=Disable feature to link a resource to users
 DisabledResourceLinkContact=Disable feature to link a resource to contacts
 ConfirmUnactivation=Confirm module reset
 OnMobileOnly=On small screen (smartphone) only
+DisableProspectCustomerType=Disable the "Prospect + Customer" third party type (so third party must be Prospect or Customer but can't be both)
diff --git a/htdocs/societe/admin/societe.php b/htdocs/societe/admin/societe.php
index 3a7b26505c781..49a9538e225e0 100644
--- a/htdocs/societe/admin/societe.php
+++ b/htdocs/societe/admin/societe.php
@@ -211,6 +211,21 @@
 	}
 }
 
+//Activate "Disable prospect/customer type"
+if ($action=="setdisableprospectcustomer") {
+    $setdisableprospectcustomer = GETPOST('value','int');
+    $res = dolibarr_set_const($db, "SOCIETE_DISABLE_PROSPECTSCUSTOMERS", $setdisableprospectcustomer,'yesno',0,'',$conf->entity);
+    if (! $res > 0) $error++;
+    if (! $error)
+    {
+        setEventMessages($langs->trans("SetupSaved"), null, 'mesgs');
+    }
+    else
+    {
+        setEventMessages($langs->trans("Error"), null, 'errors');
+    }
+}
+
 //Activate ProfId unique
 if ($action == 'setprofid')
 {
@@ -821,6 +836,25 @@
 print '</a></td>';
 print '</tr>';
 
+// Disable Prospect/Customer thirdparty type
+print '<tr class="oddeven">';
+print '<td width="80%">'.$langs->trans("DisableProspectCustomerType").'</td>';
+print '<td>&nbsp</td>';
+print '<td align="center">';
+if (!empty($conf->global->SOCIETE_DISABLE_PROSPECTSCUSTOMERS))
+{
+    print '<a href="'.$_SERVER['PHP_SELF'].'?action=setdisableprospectcustomer&value=0">';
+    print img_picto($langs->trans("Activated"),'switch_on');
+    
+}
+else
+{
+    print '<a href="'.$_SERVER['PHP_SELF'].'?action=setdisableprospectcustomer&value=1">';
+    print img_picto($langs->trans("Disabled"),'switch_off');
+}
+print '</a></td>';
+print '</tr>';
+
 /*print '<tr class="oddeven">';
 print '<td width="80%">'.$langs->trans("OnSearchAndListGoOnCustomerOrSupplierCard").'</td>';
 print '<td>&nbsp</td>';