diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
index 43cfb2923..4a7275bbf 100644
--- a/randr/rrcrtc.c
+++ b/randr/rrcrtc.c
@@ -72,7 +72,7 @@ RRCrtcCreate (ScreenPtr pScreen, void *devPrivate)
 	return FALSE;
     pScrPriv->crtcs = crtcs;
     
-    crtc = xalloc (sizeof (RRCrtcRec));
+    crtc = xcalloc (1, sizeof (RRCrtcRec));
     if (!crtc)
 	return NULL;
     crtc->id = FakeClientID (0);