diff --git a/docs/user-guide/dream/dream-advanced-powder-reduction.ipynb b/docs/user-guide/dream/dream-advanced-powder-reduction.ipynb
index 94a1aee1..bb3ca987 100644
--- a/docs/user-guide/dream/dream-advanced-powder-reduction.ipynb
+++ b/docs/user-guide/dream/dream-advanced-powder-reduction.ipynb
@@ -64,7 +64,7 @@
     "workflow[MonitorFilename[EmptyCanRun]] = dream.data.simulated_monitor_empty_can()\n",
     "workflow[CaveMonitorPosition] = sc.vector([0.0, 0.0, -4220.0], unit=\"mm\")\n",
     "\n",
-    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux\n",
+    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux_BC215\n",
     "# Select a detector bank:\n",
     "workflow[NeXusDetectorName] = \"mantle\"\n",
     "# We drop uncertainties where they would otherwise lead to correlations:\n",
@@ -185,7 +185,7 @@
     "workflow[MonitorFilename[EmptyCanRun]] = dream.data.simulated_monitor_empty_can()\n",
     "workflow[CaveMonitorPosition] = sc.vector([0.0, 0.0, -4220.0], unit=\"mm\")\n",
     "\n",
-    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux\n",
+    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux_BC215\n",
     "# Select a detector bank:\n",
     "workflow[NeXusDetectorName] = \"mantle\"\n",
     "# We drop uncertainties where they would otherwise lead to correlations:\n",
@@ -260,7 +260,7 @@
     "workflow[Filename[EmptyCanRun]] = dream.data.simulated_empty_can()\n",
     "workflow[CalibrationFilename] = None\n",
     "\n",
-    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux\n",
+    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux_BC215\n",
     "# Select a detector bank:\n",
     "workflow[NeXusDetectorName] = \"mantle\"\n",
     "# We drop uncertainties where they would otherwise lead to correlations:\n",
@@ -374,7 +374,7 @@
     "workflow[Filename[EmptyCanRun]] = dream.data.simulated_empty_can()\n",
     "workflow[CalibrationFilename] = None\n",
     "\n",
-    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux\n",
+    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux_BC215\n",
     "# We drop uncertainties where they would otherwise lead to correlations:\n",
     "workflow[UncertaintyBroadcastMode] = UncertaintyBroadcastMode.drop\n",
     "# Edges for binning in d-spacing:\n",
diff --git a/docs/user-guide/dream/dream-make-tof-lookup-table.ipynb b/docs/user-guide/dream/dream-make-tof-lookup-table.ipynb
index a90790b1..3a1515d8 100644
--- a/docs/user-guide/dream/dream-make-tof-lookup-table.ipynb
+++ b/docs/user-guide/dream/dream-make-tof-lookup-table.ipynb
@@ -40,7 +40,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "disk_choppers = choppers(InstrumentConfiguration.high_flux)"
+    "disk_choppers = choppers(InstrumentConfiguration.high_flux_BC215)"
    ]
   },
   {
@@ -48,7 +48,7 @@
    "id": "4",
    "metadata": {},
    "source": [
-    "Note that possible configurations are `high_flux`, `high_flux_BC215`, `high_flux_BC240`, and `high_resolution`.\n",
+    "Note that possible configurations are `high_flux_BC215`, `high_flux_BC240`, and `high_resolution`.\n",
     "\n",
     "## Setting up the workflow"
    ]
diff --git a/docs/user-guide/dream/dream-powder-reduction.ipynb b/docs/user-guide/dream/dream-powder-reduction.ipynb
index 1c2199f8..b067bca1 100644
--- a/docs/user-guide/dream/dream-powder-reduction.ipynb
+++ b/docs/user-guide/dream/dream-powder-reduction.ipynb
@@ -87,7 +87,7 @@
     "workflow[MonitorFilename[EmptyCanRun]] = dream.data.simulated_monitor_empty_can()\n",
     "workflow[CaveMonitorPosition] = sc.vector([0.0, 0.0, -4220.0], unit=\"mm\")\n",
     "\n",
-    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux\n",
+    "workflow[dream.InstrumentConfiguration] = dream.InstrumentConfiguration.high_flux_BC215\n",
     "# Select a detector bank:\n",
     "workflow[NeXusDetectorName] = \"mantle\"\n",
     "# We drop uncertainties where they would otherwise lead to correlations:\n",
diff --git a/docs/user-guide/dream/workflow-widget-dream.ipynb b/docs/user-guide/dream/workflow-widget-dream.ipynb
index f31556eb..41b04f2a 100644
--- a/docs/user-guide/dream/workflow-widget-dream.ipynb
+++ b/docs/user-guide/dream/workflow-widget-dream.ipynb
@@ -67,7 +67,7 @@
     "# Set parameters\n",
     "pbox._input_widgets[Filename[SampleRun]].children[0].value = str(dream.data.simulated_diamond_sample())\n",
     "pbox._input_widgets[Filename[VanadiumRun]].children[0].value = str(dream.data.simulated_vanadium_sample())\n",
-    "pbox._input_widgets[InstrumentConfiguration].value = InstrumentConfiguration.high_flux\n",
+    "pbox._input_widgets[InstrumentConfiguration].value = InstrumentConfiguration.high_flux_BC215\n",
     "pbox._input_widgets[DspacingBins].fields[\"stop\"].value = 2.3434\n",
     "# Run the workflow\n",
     "rbox = wfw.result_box\n",
diff --git a/src/ess/dream/beamline.py b/src/ess/dream/beamline.py
index 8451cf6e..e830be30 100644
--- a/src/ess/dream/beamline.py
+++ b/src/ess/dream/beamline.py
@@ -11,13 +11,10 @@ class InstrumentConfiguration(enum.Enum):
     """
     Choose between high-flux and high-resolution configurations.
 
-    The high_flux setting is the same as the high_flux_BC215. Setting the band chopper
-    phase explicitly should be favored over using the high_flux setting which is kept
-    for backwards compatibility.
+    The ``BCxxx`` suffix indicates the phase of the band chopper.
     """
 
     high_flux_BC215 = 1
-    high_flux = 1  # Legacy alias for high_flux
     high_flux_BC240 = 2
     high_resolution = 3
 
@@ -27,8 +24,7 @@ def choppers(configuration: InstrumentConfiguration) -> dict[str, DiskChopper]:
 
     match configuration:
         case (
-            InstrumentConfiguration.high_flux
-            | InstrumentConfiguration.high_flux_BC215
+            InstrumentConfiguration.high_flux_BC215
             | InstrumentConfiguration.high_flux_BC240
         ):
             return {
diff --git a/src/ess/dream/parameters.py b/src/ess/dream/parameters.py
index 57574f7f..93abcace 100644
--- a/src/ess/dream/parameters.py
+++ b/src/ess/dream/parameters.py
@@ -43,7 +43,7 @@
     CalibrationFilename
 )
 parameter_registry[InstrumentConfiguration] = ParamWithOptions.from_enum(
-    InstrumentConfiguration, default=InstrumentConfiguration.high_flux
+    InstrumentConfiguration, default=InstrumentConfiguration.high_flux_BC215
 )
 parameter_registry[MonitorFilename[SampleRun]] = FilenameParameter.from_type(
     MonitorFilename[SampleRun]
diff --git a/tests/dream/geant4_reduction_test.py b/tests/dream/geant4_reduction_test.py
index 786c0b72..e4a11ddc 100644
--- a/tests/dream/geant4_reduction_test.py
+++ b/tests/dream/geant4_reduction_test.py
@@ -55,7 +55,7 @@
     MonitorFilename[SampleRun]: dream.data.simulated_monitor_diamond_sample(),
     MonitorFilename[VanadiumRun]: dream.data.simulated_monitor_vanadium_sample(),
     MonitorFilename[EmptyCanRun]: dream.data.simulated_monitor_empty_can(),
-    dream.InstrumentConfiguration: dream.beamline.InstrumentConfiguration.high_flux,
+    dream.InstrumentConfiguration: dream.beamline.InstrumentConfiguration.high_flux_BC215,  # noqa: E501
     CalibrationFilename: None,
     UncertaintyBroadcastMode: UncertaintyBroadcastMode.drop,
     DspacingBins: sc.linspace('dspacing', 0.0, 2.3434, 201, unit='angstrom'),
@@ -122,7 +122,7 @@ def test_pipeline_can_compute_dspacing_result_using_lookup_table_filename(workfl
 def dream_tof_lookup_table():
     lut_wf = time_of_flight.TofLookupTableWorkflow()
     lut_wf[time_of_flight.DiskChoppers[AnyRun]] = dream.beamline.choppers(
-        dream.beamline.InstrumentConfiguration.high_flux
+        dream.beamline.InstrumentConfiguration.high_flux_BC215
     )
     lut_wf[time_of_flight.SourcePosition] = sc.vector(value=[0, 0, -76.55], unit="m")
     lut_wf[time_of_flight.NumberOfSimulatedNeutrons] = 500_000