diff --git a/src/Plugin/Field/FieldFormatter/SimpleGMapFormatter.php b/src/Plugin/Field/FieldFormatter/SimpleGMapFormatter.php
index 184e12d..365197f 100644
--- a/src/Plugin/Field/FieldFormatter/SimpleGMapFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/SimpleGMapFormatter.php
@@ -14,6 +14,7 @@ use Drupal\Core\Form\FormStateInterface;
  *   label = @Translation("Google Map from one-line address"),
  *   field_types = {
  *     "string",
+ *     "string_long",
  *     "computed",
  *     "computed_string",
  *   }