diff --git a/onionshare_gui/receive_mode/uploads.py b/onionshare_gui/receive_mode/uploads.py
index 1aebe902..4a383421 100644
--- a/onionshare_gui/receive_mode/uploads.py
+++ b/onionshare_gui/receive_mode/uploads.py
@@ -92,15 +92,11 @@ class File(QtWidgets.QWidget):
 
         # macOS
         elif self.common.platform == 'Darwin':
-            # TODO: Implement opening folder with file selected in macOS
-            # This seems helpful: https://stackoverflow.com/questions/3520493/python-show-in-finder
-            self.common.log('File', 'open_folder', 'not implemented for Darwin yet')
+            subprocess.call(['open', '-R', abs_filename])
 
         # Windows
         elif self.common.platform == 'Windows':
-            # TODO: Implement opening folder with file selected in Windows
-            # This seems helpful: https://stackoverflow.com/questions/6631299/python-opening-a-folder-in-explorer-nautilus-mac-thingie
-            self.common.log('File', 'open_folder', 'not implemented for Windows yet')
+            webbrowser.Popen(['explorer', '/select', abs_filename])
 
 
 class Upload(QtWidgets.QWidget):