diff --git a/qemu/tests/cfg/viorng_in_use.cfg b/qemu/tests/cfg/viorng_in_use.cfg
index 7d49057dceccf3e5d6452b46df13fc24f865c040..966ef3398ece3eea6e8f6e6657b39ed1e5e6d6ca 100644
--- a/qemu/tests/cfg/viorng_in_use.cfg
+++ b/qemu/tests/cfg/viorng_in_use.cfg
@@ -16,9 +16,11 @@
         i386:
             driver_id_cmd = 'WIN_UTILS:\devcon\wxp_x86\devcon.exe find * | find "VirtIO"'
             driver_check_cmd = "WIN_UTILS:\devcon\wxp_x86\devcon.exe status @DRIVER_ID"
+            driver_id_pattern = "(.*?):.*?VirtIO RNG Device"
         x86_64:
             driver_id_cmd = 'WIN_UTILS:\devcon\wnet_amd64\devcon.exe find * | find "VirtIO"'
             driver_check_cmd = "WIN_UTILS:\devcon\wnet_amd64\devcon.exe status @DRIVER_ID"
+            driver_id_pattern = "(.*?):.*?VirtIO RNG Device"
     variants:
         - before_bg_test:
             run_bg_flag = "before_bg_test"