diff --git a/drivers/bus/isapnp/pdo.c b/drivers/bus/isapnp/pdo.c
index 6651cc54710..87eea2d9012 100644
--- a/drivers/bus/isapnp/pdo.c
+++ b/drivers/bus/isapnp/pdo.c
@@ -64,7 +64,7 @@ IsaPdoQueryCapabilities(
     }
     else
     {
-        DeviceCapabilities->UniqueID = TRUE;
+        DeviceCapabilities->UniqueID = FALSE;
         DeviceCapabilities->RawDeviceOK = TRUE;
         DeviceCapabilities->SilentInstall = TRUE;
     }