diff --git a/src/contraqctor/qc/harp/harp_device.py b/src/contraqctor/qc/harp/harp_device.py
index e16f80d..3e7a107 100644
--- a/src/contraqctor/qc/harp/harp_device.py
+++ b/src/contraqctor/qc/harp/harp_device.py
@@ -112,15 +112,7 @@ def test_read_dump_is_complete(self):
         """
         Check if the read dump from an harp device is complete
         """
-        expected_regs = self.harp_device.device_reader.device.registers.keys()
         ds = [stream for stream in self.harp_device]
-        missing_regs = [reg_name for reg_name in expected_regs if reg_name not in [r.name for r in ds]]
-        if len(missing_regs) > 0:
-            return self.fail_test(
-                False,
-                "Read dump is not complete. Some registers are missing.",
-                context={"missing_registers": missing_regs},
-            )
 
         def _try_get_last_read(r: HarpRegister) -> t.Optional[pd.DataFrame]:
             """We will assume that all data is loaded. If not we will return None
@@ -130,9 +122,8 @@ def _try_get_last_read(r: HarpRegister) -> t.Optional[pd.DataFrame]:
             except ValueError:
                 return None
 
-        missing_read_dump = [
-            r.name for r in ds if not (r.name in expected_regs and (_try_get_last_read(r) is not None))
-        ]
+        missing_read_dump = [r.name for r in ds if not (_try_get_last_read(r) is not None)]
+
         return (
             self.pass_test(True, "Read dump is complete")
             if len(missing_read_dump) == 0
diff --git a/tests/test_qc/harp/test_harp.py b/tests/test_qc/harp/test_harp.py
index b54b57b..e398f3d 100644
--- a/tests/test_qc/harp/test_harp.py
+++ b/tests/test_qc/harp/test_harp.py
@@ -264,7 +264,11 @@ def test_read_dump_is_complete(self, mock_harp_device):
         result = suite.test_read_dump_is_complete()
         assert result.status == Status.PASSED
 
-        suite.harp_device.device_reader.device.registers["MissingReg"] = {}
+        no_read_df = pd.DataFrame(
+            {"NoReadReg": [1], "MessageType": ["WRITE"]},
+            index=pd.Index([1.0], name="Seconds"),
+        )
+        suite.harp_device._registers["NoReadReg"] = MockHarpRegister("NoReadReg", no_read_df)
         result = suite.test_read_dump_is_complete()
         assert result.status == Status.FAILED
         assert "missing_registers" in result.context