diff --git a/src/i830_video.c b/src/i830_video.c
index 1ff80a0..45f900c 100644
--- a/src/i830_video.c
+++ b/src/i830_video.c
@@ -1724,6 +1724,7 @@ i830_covering_crtc (ScrnInfoPtr pScrn,
     int			coverage, best_coverage;
     int			c;
     BoxRec		crtc_box, cover_box;
+    I830CrtcPrivatePtr	intel_crtc;
 
     best_crtc = NULL;
     best_coverage = 0;
@@ -1734,6 +1735,12 @@ i830_covering_crtc (ScrnInfoPtr pScrn,
     for (c = 0; c < xf86_config->num_crtc; c++)
     {
 	crtc = xf86_config->crtc[c];
+	intel_crtc = crtc->driver_private;
+
+	/* If the CRTC is off, treat it as not covering */
+	if (intel_crtc->dpms_mode != DPMSModeOn)
+	    continue;
+
 	i830_crtc_box (crtc, &crtc_box);
 	i830_box_intersect (&cover_box, &crtc_box, box);
 	coverage = i830_box_area (&cover_box);