diff --git a/user/edit_form.php b/user/edit_form.php
index 661825c5e1a..b43d4c98b7d 100644
--- a/user/edit_form.php
+++ b/user/edit_form.php
@@ -54,7 +54,7 @@ class user_edit_form extends moodleform {
         if ($langsel = $mform->getElementValue('lang')) {
             $lang = reset($langsel);
             // check lang exists
-            if (get_string_manager()->translation_exists($lang, false)) {
+            if (!get_string_manager()->translation_exists($lang, false)) {
                 $lang_el =& $mform->getElement('lang');
                 $lang_el->setValue($CFG->lang);
             }
diff --git a/user/editadvanced_form.php b/user/editadvanced_form.php
index d22b083ece8..78cea1dbcb9 100644
--- a/user/editadvanced_form.php
+++ b/user/editadvanced_form.php
@@ -74,7 +74,7 @@ class user_editadvanced_form extends moodleform {
         if ($langsel = $mform->getElementValue('lang')) {
             $lang = reset($langsel);
             // check lang exists
-            if (get_string_manager()->translation_exists($lang, false)) {
+            if (!get_string_manager()->translation_exists($lang, false)) {
                 $lang_el =& $mform->getElement('lang');
                 $lang_el->setValue($CFG->lang);
             }