diff --git a/tests/basic_types.rs b/tests/basic_types.rs
index f63416e..b677368 100644
--- a/tests/basic_types.rs
+++ b/tests/basic_types.rs
@@ -33,7 +33,7 @@ fn test_numbers() {
     the_same(false);
 
     // utf8 characters
-    for char in "aÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö文".chars()
+    for char in "aÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö文😀😁😂😃".chars()
     {
         the_same(char);
     }