diff --git a/wlauto/workloads/apklaunch/__init__.py b/wlauto/workloads/apklaunch/__init__.py
index 67d614f0..ce13d197 100644
--- a/wlauto/workloads/apklaunch/__init__.py
+++ b/wlauto/workloads/apklaunch/__init__.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
+# pylint: disable=attribute-defined-outside-init
 import os
 
 from time import sleep
diff --git a/wlauto/workloads/applaunch/__init__.py b/wlauto/workloads/applaunch/__init__.py
index 3dec6108..00ac999d 100644
--- a/wlauto/workloads/applaunch/__init__.py
+++ b/wlauto/workloads/applaunch/__init__.py
@@ -125,7 +125,7 @@ class ApplaunchWorkload(Workload):
     def run(self, context):
         self.device.execute('sh {}'.format(self.device_script_file), timeout=300, as_root=self.io_stress)
 
-    def update_result(self, context):
+    def update_result(self, context):  # pylint: disable=too-many-locals
         result_files = ['time.result']
         result_files += ['{}.result'.format(sensor.label) for sensor in self.sensors]
         metric_suffix = ''
diff --git a/wlauto/workloads/geekbench/__init__.py b/wlauto/workloads/geekbench/__init__.py
index 3ac6255a..119ecfde 100644
--- a/wlauto/workloads/geekbench/__init__.py
+++ b/wlauto/workloads/geekbench/__init__.py
@@ -94,6 +94,10 @@ class Geekbench(AndroidUiAutoBenchmark):
         self.uiauto_params['times'] = self.times
         self.run_timeout = 5 * 60 * self.times
 
+    def initialize(self, context):
+        if self.device.is_rooted:
+            raise WorkloadError('Geekbench workload only works on rooted devices.')
+
     def init_resources(self, context):
         self.apk_file = context.resolver.get(wlauto.common.android.resources.ApkFile(self), version=self.version)
         self.uiauto_file = context.resolver.get(wlauto.common.android.resources.JarFile(self))