diff --git a/pyopencl/scan.py b/pyopencl/scan.py
index 0106207cb1b91eaf9289f4f03b47dfe5b015b669..fd211c54eb925464b59462ffbc7179ff8c60d6c8 100644
--- a/pyopencl/scan.py
+++ b/pyopencl/scan.py
@@ -1518,7 +1518,7 @@ class GenericScanKernel(_GenericScanKernelBase):
 
         if self.store_segment_start_flags:
             segment_start_flags = cl.array.empty(
-                    queue, n, dtype=np.bool,
+                    queue, n, dtype=np.bool8,
                     allocator=allocator)
 
         # }}}
diff --git a/test/test_wrapper.py b/test/test_wrapper.py
index a9863a40db25e243ad56cf83808b7e0e233fee30..7030549a5ea4a54ac0378fd6ae19afdc31c6a1dc 100644
--- a/test/test_wrapper.py
+++ b/test/test_wrapper.py
@@ -975,6 +975,11 @@ def test_spirv(ctx_factory):
         pytest.skip("SPIR-V program creation only available "
                 "in OpenCL 2.1 and higher")
 
+    if queue.device.platform.name == "Portable Computing Language":
+        # I'm not sure this is universal, but pocl 1.7 seems to use it.
+        if "cl_khr_spirv" not in queue.device.extensions.split():
+            pytest.skip("SPIR-V program creation not supported by device")
+
     n = 50000
 
     a_dev = cl.clrandom.rand(queue, n, np.float32)