diff --git a/src/java.desktop/share/classes/sun/awt/image/SurfaceManager.java b/src/java.desktop/share/classes/sun/awt/image/SurfaceManager.java
index fe0fd6e787d..bb327889a86 100644
--- a/src/java.desktop/share/classes/sun/awt/image/SurfaceManager.java
+++ b/src/java.desktop/share/classes/sun/awt/image/SurfaceManager.java
@@ -89,7 +89,7 @@ public abstract class SurfaceManager {
         imgaccessor.setSurfaceManager(img, mgr);
     }
 
-    private ConcurrentHashMap<Object,Object> cacheMap;
+    private volatile ConcurrentHashMap<Object,Object> cacheMap;
 
     /**
      * Return an arbitrary cached object for an arbitrary cache key.