diff --git a/lcviz/plugins/photometric_extraction/photometric_extraction.py b/lcviz/plugins/photometric_extraction/photometric_extraction.py
index 5c84936..235c555 100644
--- a/lcviz/plugins/photometric_extraction/photometric_extraction.py
+++ b/lcviz/plugins/photometric_extraction/photometric_extraction.py
@@ -59,6 +59,20 @@ def _set_relevant(self, *args):
         else:
             self.irrelevant_msg = ''
 
+    def _on_global_display_unit_changed(self, msg=None):
+        if msg is None:
+            self.flux_units = str(self.app._get_display_unit('flux'))
+            self.time_units = str(self.app._get_display_unit('time'))
+        elif msg.axis == 'flux':
+            self.flux_units = str(msg.unit)
+        elif msg.axis == 'time':
+            self.time_units = str(msg.unit)
+        else:
+            # ignore
+            return
+        # update results_units based on flux_units, sb_units, and currently selected function
+        self._update_results_units()
+
     @property
     def slice_display_unit_name(self):
         return 'time'
diff --git a/lcviz/plugins/plot_options/plot_options.py b/lcviz/plugins/plot_options/plot_options.py
index 5f79444..ced7acd 100644
--- a/lcviz/plugins/plot_options/plot_options.py
+++ b/lcviz/plugins/plot_options/plot_options.py
@@ -36,10 +36,6 @@ class PlotOptions(PlotOptions):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-    @observe('vdocs')
-    def _update_docs_link(self, *args):
-        self.docs_link = f"https://lcviz.readthedocs.io/en/{self.vdocs}/plugins.html#plot-options"
-
         def not_spatial_subset_in_scatter_viewer(lyr):
             # note: have to check the classname instead of isinstance to avoid circular import
             if np.any([isinstance(viewer, CubeView)
@@ -51,6 +47,10 @@ def not_spatial_subset_in_scatter_viewer(lyr):
 
         self.layer.add_filter(not_spatial_subset_in_scatter_viewer)
 
+    @observe('vdocs')
+    def _update_docs_link(self, *args):
+        self.docs_link = f"https://lcviz.readthedocs.io/en/{self.vdocs}/plugins.html#plot-options"
+
     def _default_tpf_stretch(
             self, vmin_percentile=5, vmax_percentile=99, tpf_viewer_reference='image'
     ):