diff --git a/hw/xfree86/drivers/video/modesetting/present.c b/hw/xfree86/drivers/video/modesetting/present.c
index 80ac5c9d3d..87cde09f0b 100644
--- a/hw/xfree86/drivers/video/modesetting/present.c
+++ b/hw/xfree86/drivers/video/modesetting/present.c
@@ -352,7 +352,7 @@ ms_present_check_flip(RRCrtcPtr crtc,
 
 no_flip:
     /* Export some info about TearFree if Present can't flip anyway */
-    if (reason) {
+    if (reason && *reason == PRESENT_FLIP_REASON_UNKNOWN) {
         xf86CrtcPtr xf86_crtc = crtc->devPrivate;
         drmmode_crtc_private_ptr drmmode_crtc = xf86_crtc->driver_private;
         drmmode_tearfree_ptr trf = &drmmode_crtc->tearfree;