diff --git a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
index 51314c31c6..1bda8d064c 100644
--- a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
+++ b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
@@ -11,7 +11,7 @@
 from traitlets import Any, Bool, Dict, Float, List, Unicode, observe
 
 from jdaviz.core.custom_traitlets import FloatHandleEmpty
-from jdaviz.core.events import SnackbarMessage, SliceValueUpdatedMessage
+from jdaviz.core.events import SnackbarMessage, SliceValueUpdatedMessage, GlobalDisplayUnitChanged
 from jdaviz.core.marks import PluginLine
 from jdaviz.core.registries import tray_registry
 from jdaviz.core.template_mixin import (PluginTemplateMixin,
@@ -107,6 +107,9 @@ class SpectralExtraction(PluginTemplateMixin, ApertureSubsetSelectMixin,
     extraction_available = Bool(False).tag(sync=True)
     overwrite_warn = Bool(False).tag(sync=True)
 
+    results_units = Unicode().tag(sync=True)
+    spectrum_y_units = Unicode().tag(sync=True)
+
     aperture_method_items = List().tag(sync=True)
     aperture_method_selected = Unicode('Center').tag(sync=True)
 
@@ -174,6 +177,8 @@ def __init__(self, *args, **kwargs):
 
         self.session.hub.subscribe(self, SliceValueUpdatedMessage,
                                    handler=self._on_slice_changed)
+        self.hub.subscribe(self, GlobalDisplayUnitChanged,
+                           handler=self._update_results_units)
 
         self._update_disabled_msg()
 
@@ -308,6 +313,14 @@ def _update_mark_scale(self, *args):
         else:
             self.background.scale_factor = self.slice_spectral_value/self.reference_spectral_value
 
+    @observe('function_selected')
+    def _update_results_units(self, msg={}):
+        self.spectrum_y_units = str(self.app._get_display_unit('spectral_y'))
+        if self.function_selected.lower() == 'sum':
+            self.results_units = str(self.app._get_display_unit('flux'))
+        else:
+            self.results_units = str(self.app._get_display_unit('sb'))
+
     @observe('function_selected', 'aperture_method_selected')
     def _update_aperture_method_on_function_change(self, *args):
         if (self.function_selected.lower() in ('min', 'max') and
diff --git a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.vue b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.vue
index 74629b7a65..bc4cf58431 100644
--- a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.vue
+++ b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.vue
@@ -244,7 +244,15 @@
         :action_spinner="spinner"
         :action_disabled="aperture_selected === bg_selected || conflicting_aperture_and_function"
         @click:action="spectral_extraction"
-      ></plugin-add-results>
+      >
+        <v-alert
+          v-if="results_units !== spectrum_y_units"
+          type='warning'
+          style="margin-left: -12px; margin-right: -12px"
+        >
+          function='{{ function_selected }}' will result in units of {{ results_units }}, but will be displayed as {{ spectrum_y_units }}.  To change plotted units, see the Unit Conversion plugin
+        </v-alert>
+      </plugin-add-results>
 
       <j-plugin-section-header v-if="extraction_available && export_enabled">Results</j-plugin-section-header>