diff --git a/tests/functional/loops.sh b/tests/functional/loops.sh
index b3d0b69..c4d9896 100755
--- a/tests/functional/loops.sh
+++ b/tests/functional/loops.sh
@@ -12,4 +12,9 @@ do
     echo "should be printed only once"
 done;
 
+while true;
+do
+    echo "yes"
+done;
+
 echo "tests done"