diff --git a/salsa_advocacy/salsa_advocacy.module b/salsa_advocacy/salsa_advocacy.module
index 31b05ce..852c913 100644
--- a/salsa_advocacy/salsa_advocacy.module
+++ b/salsa_advocacy/salsa_advocacy.module
@@ -663,6 +663,15 @@ function salsa_advocacy_targeted_form_hidden_fields(&$form, $form_state) {
     '#type' => 'hidden',
     '#value' => $form_state['salsa_object']->redirect_path,
   );
+
+  // Add field for the supporter language, unless setting it was disabled.
+  if (variable_get('salsa_entity_set_supporter_language', TRUE)) {
+    global $language;
+    $form['Supporter_Info']['Language_Code'] = array(
+      '#type' => 'hidden',
+      '#value' => SalsaEntityLanguageMapper::toIso639_2($language->language),
+    );
+  }
 }
 
 /**