diff --git a/testing/mozharness/scripts/android_emulator_unittest.py b/testing/mozharness/scripts/android_emulator_unittest.py
index c7b70b424525..0fe7c8bf3606 100644
--- a/testing/mozharness/scripts/android_emulator_unittest.py
+++ b/testing/mozharness/scripts/android_emulator_unittest.py
@@ -376,6 +376,11 @@ class AndroidEmulatorTest(TestingMixin, EmulatorMixin, BaseScript, MozbaseMixin)
             self.warning("Failed to take screenshot: %s" % err.strerror)
 
     def _query_package_name(self):
+        if self.app_name is None:
+            # For convenience, assume geckoview_example when install target
+            # looks like geckoview.
+            if 'geckoview' in self.installer_path:
+                self.app_name = 'org.mozilla.geckoview_example'
         if self.app_name is None:
             # Find appname from package-name.txt - assumes download-and-extract
             # has completed successfully.