diff --git a/lumispy/hyperspy_extension.yaml b/lumispy/hyperspy_extension.yaml
index 017993a42..3d34c83f9 100644
--- a/lumispy/hyperspy_extension.yaml
+++ b/lumispy/hyperspy_extension.yaml
@@ -151,7 +151,7 @@ signals:
     module: lumispy.signals.luminescence_transient
 
   LumiTransientSpectrum:
-    signal_type: TransientSpec
+    signal_type: Luminescence
     signal_type_aliases:
       - TRLumiSpec
       - TR luminescence spectrum
@@ -161,8 +161,9 @@ signals:
     lazy: False
     module: lumispy.signals.luminescence_transientspec
   LazyLumiTransientSpectrum:
-    signal_type: TransientSpec
+    signal_type: Luminescence
     signal_type_aliases:
+      - TransientSpec
       - TRLumiSpec
       - TR luminescence spectrum
       - time-resolved luminescence spectrum
diff --git a/lumispy/signals/luminescence_spectrum.py b/lumispy/signals/luminescence_spectrum.py
index 2c4dd6a0e..4c8002aaa 100644
--- a/lumispy/signals/luminescence_spectrum.py
+++ b/lumispy/signals/luminescence_spectrum.py
@@ -26,6 +26,7 @@
 from traits.api import Undefined
 
 from lumispy.signals.common_luminescence import CommonLumi
+from lumispy.signals.luminescence_transient import LumiTransient
 from lumispy import to_array, savetxt
 from lumispy.utils import solve_grating_equation
 from lumispy.utils.axes import GRATING_EQUATION_DOCSTRING_PARAMETERS
@@ -41,11 +42,16 @@
 class LumiSpectrum(Signal1D, CommonLumi):
     """**General 1D luminescence signal class.**"""
 
-    _signal_type = "Luminescence"
     _signal_dimension = 1
+    _signal_type = "Luminescence"
 
     def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+        if hasattr(self,'axes_manager') and self.axes_manager[-1].units in ["fs", "ps", "ns", "µs", "mus", "ms", "s"]:
+            self.metadata.Signal.signal_type = "Transient"
+            self.__class__ = LumiTransient
+            self.__init__(*args, **kwargs)
+        else:
+            super().__init__(*args, **kwargs)
 
     def remove_background_from_file(self, background=None, inplace=False, **kwargs):
         """Subtract the background to the signal in all navigation axes. If no
diff --git a/lumispy/signals/luminescence_transientspec.py b/lumispy/signals/luminescence_transientspec.py
index 724870f36..08e9e4143 100644
--- a/lumispy/signals/luminescence_transientspec.py
+++ b/lumispy/signals/luminescence_transientspec.py
@@ -31,7 +31,7 @@
 class LumiTransientSpectrum(Signal2D, CommonLumi, CommonTransient):
     """**General 2D luminescence signal class (transient/time resolved)**"""
 
-    _signal_type = "TransientSpec"
+    _signal_type = "Luminescence"
     _signal_dimension = 2
 
 
diff --git a/lumispy/tests/utils/test_axis_conversion.py b/lumispy/tests/utils/test_axis_conversion.py
index 798d0380e..2f4cf279a 100644
--- a/lumispy/tests/utils/test_axis_conversion.py
+++ b/lumispy/tests/utils/test_axis_conversion.py
@@ -194,15 +194,17 @@ def test_eV_slicing():
     S.to_eV(inplace=True)
     S.isig[3.251:4.052]
 
+
 def test_to_eV_2D():
-    axis1 = UniformDataAxis(size=10, offset=200, scale=10, units='nm')
-    axis2 = UniformDataAxis(size=8, offset=0, scale=0.1, units='ns')
-    data = arange(80).reshape(8,10)
+    axis1 = UniformDataAxis(size=10, offset=200, scale=10, units="nm")
+    axis2 = UniformDataAxis(size=8, offset=0, scale=0.1, units="ns")
+    data = arange(80).reshape(8, 10)
     S1 = LumiTransientSpectrum(data, axes=[axis2, axis1])
     S2 = S1.to_eV(inplace=True, jacobian=False)
     assert S1.axes_manager[0].units == "eV"
     assert S1.axes_manager[0].axis[-1] == nm2eV(axis1.axis[0])
-    assert S1.data[0,0] == data[0,-1]
+    assert S1.data[0, 0] == data[0, -1]
+
 
 @mark.parametrize(("jacobian"), (True, False))
 def test_reset_variance_linear_model_eV(jacobian):