diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/editor/WFilenameEditor.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/editor/WFilenameEditor.java
index ce66b709f5..ca4d3bbf33 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/editor/WFilenameEditor.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/editor/WFilenameEditor.java
@@ -49,6 +49,7 @@ public class WFilenameEditor extends WEditor
 		getComponent().setButtonImage("/images/Open16.png");
 		getComponent().addEventListener(Events.ON_UPLOAD, this);
 		getComponent().getButton().setUpload("true,native");
+		getComponent().getButton().setAttribute("org.zkoss.zul.image.preload", Boolean.TRUE);
 	}
 
 	@Override
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/panel/WAttachment.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/panel/WAttachment.java
index 5fa8a3008a..7d59295011 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/panel/WAttachment.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/panel/WAttachment.java
@@ -250,6 +250,7 @@ public class WAttachment extends Window implements EventListener<Event>
 		bSave.addEventListener(Events.ON_CLICK, this);
 
 		bLoad.setImage("/images/Import24.png");
+		bLoad.setAttribute("org.zkoss.zul.image.preload", Boolean.TRUE);
 		bLoad.setTooltiptext(Msg.getMsg(Env.getCtx(), "Load"));
 		bLoad.setUpload("true");
 		bLoad.addEventListener(Events.ON_UPLOAD, this);