diff --git a/miext/shadow/shadow.c b/miext/shadow/shadow.c
index 46ddfbb6c..92cb5e980 100644
--- a/miext/shadow/shadow.c
+++ b/miext/shadow/shadow.c
@@ -119,6 +119,7 @@ shadowDamageBox (WindowPtr pWindow, BoxPtr pBox)
 
     REGION_INIT (pWindow->drawable.pScreen, &region, pBox, 1);
     shadowDamageRegion (pWindow, &region);
+    REGION_UNINIT (pWindow->drawable.pScreen, &region);
 }
 
 static void