diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c
index 7c8d779dc..d509f4400 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -1306,7 +1306,7 @@ PreInit(ScrnInfoPtr pScrn, int flags)
     ms->atomic_modeset_capable = (ret == 0);
 
     if (xf86ReturnOptValBool(ms->drmmode.Options, OPTION_ATOMIC, FALSE)) {
-        ret = drmSetClientCap(ms->fd, DRM_CLIENT_CAP_ATOMIC, 1);
+        ret = drmSetClientCap(ms->fd, DRM_CLIENT_CAP_ATOMIC, 2);
         ms->atomic_modeset = (ret == 0);
         if (!ms->atomic_modeset)
             xf86DrvMsg(pScrn->scrnIndex, X_WARNING, "Atomic modesetting not supported\n");