diff --git a/pyopencl/elementwise.py b/pyopencl/elementwise.py
index add64c672cc7367868fbcf079419343c687d65e2..6efd649842eee6c39ad172492ada04a5322ac652 100644
--- a/pyopencl/elementwise.py
+++ b/pyopencl/elementwise.py
@@ -649,7 +649,7 @@ def get_bessel_jn_kernel(context):
             "z[i] = bessel_jn(ord_n, x[i])",
             name="bessel_jn_kernel",
             preamble="""
-            #include <pyopencl-bessel-j.h>
+            #include <pyopencl-bessel-j.cl>
             """)
 
 
diff --git a/test/test_array.py b/test/test_array.py
index 05c28814b5c70afa1f16d754ee214e84a42d82d5..70b128f177e97081b85c76a666c70b6fd673440f 100644
--- a/test/test_array.py
+++ b/test/test_array.py
@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+
 import numpy as np
 import numpy.linalg as la
 import sys
@@ -734,7 +735,7 @@ def test_scan(ctx_factory):
                 desired_result -= host_data
 
             is_ok = (dev_data.get() == desired_result).all()
-            if not is_ok:
+            if 0 and not is_ok:
                 print(summarize_error(dev_data.get(), desired_result, host_data))
 
             assert is_ok