diff --git a/devlib/utils/android.py b/devlib/utils/android.py
index 1c0c9cb..73a1857 100755
--- a/devlib/utils/android.py
+++ b/devlib/utils/android.py
@@ -452,7 +452,7 @@ def adb_list_devices(adb_server=None):
     return devices
 
 
-def get_adb_command(device, command, timeout=None,adb_server=None):
+def get_adb_command(device, command, adb_server=None):
     _check_env()
     device_string = ""
     if adb_server != None:
@@ -460,8 +460,8 @@ def get_adb_command(device, command, timeout=None,adb_server=None):
     device_string += ' -s {}'.format(device) if device else ''
     return "adb{} {}".format(device_string, command)
 
-def adb_command(device, command, timeout=None,adb_server=None):
-    full_command = get_adb_command(device, command, timeout, adb_server)
+def adb_command(device, command, timeout=None, adb_server=None):
+    full_command = get_adb_command(device, command, adb_server)
     logger.debug(full_command)
     output, _ = check_output(full_command, timeout, shell=True)
     return output