diff --git a/devlib/utils/android.py b/devlib/utils/android.py
index 90be900..3140e31 100755
--- a/devlib/utils/android.py
+++ b/devlib/utils/android.py
@@ -603,7 +603,7 @@ def adb_background_shell(conn, command,
     p = subprocess.Popen(full_command, stdout=stdout, stderr=stderr, shell=True)
 
     # Out of band PID lookup, to avoid conflicting needs with stdout redirection
-    find_pid = 'ps -A -o pid,args | grep {}'.format(quote(uuid_var))
+    find_pid = '{} ps -A -o pid,args | grep {}'.format(conn.busybox, quote(uuid_var))
     ps_out = conn.execute(find_pid)
     pids = [
         int(line.strip().split(' ', 1)[0])