diff --git a/examples/faiss/1-flat.kg b/examples/faiss/1-flat.kg
index 2d32614..d7a3b72 100644
--- a/examples/faiss/1-flat.kg
+++ b/examples/faiss/1-flat.kg
@@ -1,12 +1,12 @@
 :" KlongPy varaint of 1-flat.py "
 
 .pyf("faiss";"IndexFlatL2")
-.pyf("numpy";"random");rna::.pya(random;"random")
+.pyf("numpy";"random");rns::.pya(random;"seed");rna::.pya(random;"random")
 
 d::64       :" dimension "
 nb::100000  :" database size "
 nq::10000   :" nb of queries "
-.rns(1234)  :" make reproducible "
+rns(1234)  :" make reproducible "
 
 xb::rna(nb,d)
 xq::rna(nq,d)
diff --git a/klongpy/sys_fn.py b/klongpy/sys_fn.py
index cb6961f..5750981 100644
--- a/klongpy/sys_fn.py
+++ b/klongpy/sys_fn.py
@@ -590,34 +590,6 @@ def eval_sys_random_number():
     return np.random.random()
 
 
-def eval_sys_random_array(x):
-    """
-
-        .rna(x)                                           [Random-Array]
-
-        Return a random array with shape specified by x.
-
-        x may be a number (shape of size 1) or a shape array.
-
-    """
-    if not is_number(x) and not is_list(x):
-        raise KlongException("array length x must be a number or a shape array")
-    if is_number(x):
-        x = np.asarray([x])
-    return np.random.random(x)
-
-
-def eval_sys_random_seed(x):
-    """
-
-        .rns(x)                                            [Random-Seed]
-
-        Set the random seed to x.
-
-    """
-    return np.random.seed(x)
-
-
 def eval_sys_read(klong):
     """