diff --git a/pytorch_lightning/profiler/base.py b/pytorch_lightning/profiler/base.py
index 4e90d8adc3..d453095b24 100644
--- a/pytorch_lightning/profiler/base.py
+++ b/pytorch_lightning/profiler/base.py
@@ -62,7 +62,6 @@ class BaseProfiler(AbstractProfiler):
         self._output_file: Optional[TextIO] = None
         self._write_stream: Optional[Callable] = None
         self._local_rank: Optional[int] = None
-        self._log_dir: Optional[str] = None
         self._stage: Optional[str] = None
 
     @contextmanager
@@ -157,7 +156,6 @@ class BaseProfiler(AbstractProfiler):
         """Execute arbitrary pre-profiling set-up steps."""
         self._stage = stage
         self._local_rank = local_rank
-        self._log_dir = log_dir
         self.dirpath = self.dirpath or log_dir
 
     def teardown(self, stage: Optional[str] = None) -> None:
diff --git a/tests/profiler/test_profiler.py b/tests/profiler/test_profiler.py
index f27f4ab1c6..8d92c4318b 100644
--- a/tests/profiler/test_profiler.py
+++ b/tests/profiler/test_profiler.py
@@ -111,10 +111,10 @@ def test_simple_profiler_deepcopy(tmpdir):
     assert deepcopy(simple_profiler)
 
 
-def test_simple_profiler_log_dir(tmpdir):
+def test_simple_profiler_dirpath(tmpdir):
     """Ensure the profiler dirpath defaults to `trainer.log_dir` when not present."""
     profiler = SimpleProfiler(filename="profiler")
-    assert profiler._log_dir is None
+    assert profiler.dirpath is None
 
     model = BoringModel()
     trainer = Trainer(default_root_dir=tmpdir, max_epochs=1, profiler=profiler)
@@ -122,7 +122,7 @@ def test_simple_profiler_log_dir(tmpdir):
 
     expected = tmpdir / "lightning_logs" / "version_0"
     assert trainer.log_dir == expected
-    assert profiler._log_dir == trainer.log_dir
+    assert profiler.dirpath == trainer.log_dir
     assert expected.join("fit-profiler.txt").exists()
 
 
@@ -131,7 +131,7 @@ def test_simple_profiler_with_nonexisting_log_dir(tmpdir):
     nonexisting_tmpdir = tmpdir / "nonexisting"
 
     profiler = SimpleProfiler(filename="profiler")
-    assert profiler._log_dir is None
+    assert profiler.dirpath is None
 
     model = BoringModel()
     trainer = Trainer(
@@ -142,7 +142,7 @@ def test_simple_profiler_with_nonexisting_log_dir(tmpdir):
     expected = nonexisting_tmpdir / "lightning_logs" / "version_0"
     assert expected.exists()
     assert trainer.log_dir == expected
-    assert profiler._log_dir == trainer.log_dir
+    assert profiler.dirpath == trainer.log_dir
     assert expected.join("fit-profiler.txt").exists()
 
 
@@ -151,7 +151,6 @@ def test_simple_profiler_with_nonexisting_dirpath(tmpdir):
     nonexisting_tmpdir = tmpdir / "nonexisting"
 
     profiler = SimpleProfiler(dirpath=nonexisting_tmpdir, filename="profiler")
-    assert profiler._log_dir is None
 
     model = BoringModel()
     trainer = Trainer(