diff --git a/tests/conftest.py b/tests/conftest.py
index 92c599c..8fdfe33 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -11,21 +11,29 @@ from .pfwtest import is_windows_32_bits, is_process_32_bits, test_binary_name, D
 
 if is_windows_32_bits:
     def pop_proc_32(dwCreationFlags=DEFAULT_CREATION_FLAGS):
-        return windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+        p = windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+        assert p.bitness == 32
+        return p
 
     def pop_proc_64(dwCreationFlags=DEFAULT_CREATION_FLAGS):
         raise WindowsError("Cannot create calc64 in 32bits system")
 else:
     def pop_proc_32(dwCreationFlags=DEFAULT_CREATION_FLAGS):
-        return windows.utils.create_process(r"C:\Windows\syswow64\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+        p = windows.utils.create_process(r"C:\Windows\syswow64\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+        assert p.bitness == 32
+        return p
 
     if is_process_32_bits:
         def pop_proc_64(dwCreationFlags=DEFAULT_CREATION_FLAGS):
             with windows.utils.DisableWow64FsRedirection():
-                return windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+                p = windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+                assert p.bitness == 64
+                return p
     else:
         def pop_proc_64(dwCreationFlags=DEFAULT_CREATION_FLAGS):
-            return windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+            p = windows.utils.create_process(r"C:\Windows\system32\{0}".format(test_binary_name).encode("ascii"), dwCreationFlags=dwCreationFlags, show_windows=True)
+            assert p.bitness == 64
+            return p
 
 
 import sys
diff --git a/tests/pfwtest.py b/tests/pfwtest.py
index 92023b3..2674bdd 100644
--- a/tests/pfwtest.py
+++ b/tests/pfwtest.py
@@ -28,7 +28,7 @@ require_admin = pytest.mark.skipif(not is_admin, reason="Test must be launched a
 check_for_gc_garbage = pytest.mark.usefixtures("check_for_gc_garbage")
 check_for_handle_leak = pytest.mark.usefixtures("check_for_handle_leak")
 
-test_binary_name = "notepad.exe"
+test_binary_name = "winver.exe"
 DEFAULT_CREATION_FLAGS = gdef.CREATE_NEW_CONSOLE