diff --git a/tests/unit/modules/test_openscap.py b/tests/unit/modules/test_openscap.py
index 6fbdfed7cf..c20220ea97 100644
--- a/tests/unit/modules/test_openscap.py
+++ b/tests/unit/modules/test_openscap.py
@@ -35,7 +35,7 @@ def test_openscap_xccdf_eval_success(self):
             "salt.modules.openscap.Popen",
             MagicMock(
                 return_value=Mock(
-                    **{"returncode": 0, "communicate.return_value": ("", "")}
+                    **{"returncode": 0, "communicate.return_value": (bytes(0), bytes(0))}
                 )
             ),
         ):
@@ -82,7 +82,7 @@ def test_openscap_xccdf_eval_success_with_failing_rules(self):
             "salt.modules.openscap.Popen",
             MagicMock(
                 return_value=Mock(
-                    **{"returncode": 2, "communicate.return_value": ("", "some error")}
+                    **{"returncode": 2, "communicate.return_value": (bytes(0), bytes("some error", "UTF-8"))}
                 )
             ),
         ):
@@ -137,7 +137,7 @@ def test_openscap_xccdf_eval_success_ignore_unknown_params(self):
             "salt.modules.openscap.Popen",
             MagicMock(
                 return_value=Mock(
-                    **{"returncode": 2, "communicate.return_value": ("", "some error")}
+                    **{"returncode": 2, "communicate.return_value": (bytes(0), bytes("some error", "UTF-8"))}
                 )
             ),
         ):
@@ -180,7 +180,7 @@ def test_openscap_xccdf_eval_evaluation_error(self):
                 return_value=Mock(
                     **{
                         "returncode": 1,
-                        "communicate.return_value": ("", "evaluation error"),
+                        "communicate.return_value": (bytes(0), bytes("evaluation error", "UTF-8")),
                     }
                 )
             ),