diff --git a/program/actions/contacts/import.php b/program/actions/contacts/import.php
index a759588f52..89742532e2 100644
--- a/program/actions/contacts/import.php
+++ b/program/actions/contacts/import.php
@@ -367,43 +367,13 @@ public static function import_map($attrib)
         $rcmail = rcmail::get_instance();
         $params = $_SESSION['contactcsvimport']['params'];
 
-        $available_fields = [];
-        foreach (self::$CONTACT_COLTYPES as $id => $field) {
-            if ($id == 'photo') {
-                // skip photo field because there are no photos in CSV files
-                continue;
-            }
-
-            if (!empty($field['subtypes'])) {
-                $subtype_names = array_map('rcmail_action_contacts_index::get_type_label', $field['subtypes']);
-
-                for ($i = 0; $i < count($field['subtypes']); $i++) {
-                    if (!empty($field['childs'])) {
-                        foreach ($field['childs'] as $cid => $child) {
-                            $available_fields[$cid . ':' . $field['subtypes'][$i]] = $child['label'] . ' - ' . $subtype_names[$i];
-                        }
-                    } else {
-                        $available_fields[$id . ':' . $field['subtypes'][$i]] = $field['label'] . ' - ' . $subtype_names[$i];
-                    }
-                }
-            } else {
-                $available_fields[$id] = $field['label'];
-            }
-        }
+        $available_fields = rcube_csv2vcard::list_fields();
 
-        // allow importing of group assignments
-        if (!empty($params['with_groups'])) {
-            $available_fields['groups'] = $rcmail->gettext('groups');
+        // remove groups field if group import is not enabled
+        if (empty($params['with_groups'])) {
+            unset($available_fields['groups']);
         }
 
-        // add separate birthday date parts fields for thunderbird imports
-        $available_fields['birthday-d'] = $rcmail->gettext('birth_day');
-        $available_fields['birthday-m'] = $rcmail->gettext('birth_month');
-        $available_fields['birthday-y'] = $rcmail->gettext('birth_year');
-
-        // sort by label for easy use
-        asort($available_fields, \SORT_LOCALE_STRING);
-
         $fieldlist = new html_select(['name' => '_map[]']);
         $fieldlist->add($rcmail->gettext('fieldnotmapped'), '');
         $fieldlist->add(array_values($available_fields), array_keys($available_fields));
diff --git a/program/lib/Roundcube/rcube_csv2vcard.php b/program/lib/Roundcube/rcube_csv2vcard.php
index b9bbdbd964..5addf35dc1 100644
--- a/program/lib/Roundcube/rcube_csv2vcard.php
+++ b/program/lib/Roundcube/rcube_csv2vcard.php
@@ -342,6 +342,53 @@ public function import($csv, $dry_run = false, $skip_head = true)
         return null;
     }
 
+    /**
+     * Get list of contact fields available for import
+     *
+     * @return array string List of fields
+     */
+    public static function list_fields()
+    {
+        $rcmail = rcmail::get_instance();
+        $available_fields = [];
+
+        foreach (rcmail_action_contacts_index::$CONTACT_COLTYPES as $id => $field) {
+            if ($id == 'photo') {
+                // skip photo field because there are no photos in CSV files
+                continue;
+            }
+
+            if (!empty($field['subtypes'])) {
+                $subtype_names = array_map('rcmail_action_contacts_index::get_type_label', $field['subtypes']);
+
+                for ($i = 0; $i < count($field['subtypes']); $i++) {
+                    if (!empty($field['childs'])) {
+                        foreach ($field['childs'] as $cid => $child) {
+                            $available_fields[$cid . ':' . $field['subtypes'][$i]] = $child['label'] . ' - ' . $subtype_names[$i];
+                        }
+                    } else {
+                        $available_fields[$id . ':' . $field['subtypes'][$i]] = $field['label'] . ' - ' . $subtype_names[$i];
+                    }
+                }
+            } else {
+                $available_fields[$id] = $field['label'];
+            }
+        }
+
+        // allow importing of group assignments
+        $available_fields['groups'] = $rcmail->gettext('groups');
+
+        // add separate birthday date parts fields for thunderbird imports
+        $available_fields['birthday-d'] = $rcmail->gettext('birth_day');
+        $available_fields['birthday-m'] = $rcmail->gettext('birth_month');
+        $available_fields['birthday-y'] = $rcmail->gettext('birth_year');
+
+        // sort by label for easy use
+        asort($available_fields, \SORT_LOCALE_STRING);
+
+        return $available_fields;
+    }
+
     /**
      * Set field mapping info
      *