diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index 307e7637..e7eeb44d 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -2739,6 +2739,11 @@ sna_covering_crtc(ScrnInfoPtr scrn,
 		     __FUNCTION__, c,
 		     crtc->bounds.x1, crtc->bounds.y1,
 		     crtc->bounds.x2, crtc->bounds.y2));
+		if (*(const uint64_t *)box == *(uint64_t *)&crtc->bounds) {
+			DBG(("%s: box exactly matches crtc [%d]\n",
+			     __FUNCTION__, c));
+			return crtc;
+		}
 
 		if (!sna_box_intersect(&cover_box, &crtc->bounds, box))
 			continue;