diff --git a/nac3standalone/demo/src/ndarray.py b/nac3standalone/demo/src/ndarray.py
index 362a4ac8..9664b3f0 100644
--- a/nac3standalone/demo/src/ndarray.py
+++ b/nac3standalone/demo/src/ndarray.py
@@ -1669,6 +1669,7 @@ def run() -> int32:
 
     test_ndarray_round()
     test_ndarray_floor()
+    test_ndarray_ceil()
     test_ndarray_min()
     test_ndarray_minimum()
     test_ndarray_minimum_broadcast()