diff --git a/dix/touch.c b/dix/touch.c
index e64a6262c..5f77be575 100644
--- a/dix/touch.c
+++ b/dix/touch.c
@@ -572,8 +572,8 @@ TouchBuildSprite(DeviceIntPtr sourcedev, TouchPointInfoPtr ti,
         return FALSE;
 
     /* Mark which grabs/event selections we're delivering to: max one grab per
-     * window plus the bottom-most event selection. */
-    ti->listeners = calloc(sprite->spriteTraceGood + 1, sizeof(*ti->listeners));
+     * window plus the bottom-most event selection, plus any active grab. */
+    ti->listeners = calloc(sprite->spriteTraceGood + 2, sizeof(*ti->listeners));
     if (!ti->listeners) {
         sprite->spriteTraceGood = 0;
         return FALSE;