diff --git a/Products/zms/plugins/www/common/zmi_ace_editor.js b/Products/zms/plugins/www/common/zmi_ace_editor.js
index 78b62a60c..8b8abc6f2 100644
--- a/Products/zms/plugins/www/common/zmi_ace_editor.js
+++ b/Products/zms/plugins/www/common/zmi_ace_editor.js
@@ -102,7 +102,7 @@ function show_ace_editor(e, toggle=false) {
 		editor.setTheme('ace/theme/eclipse');
 		editor.getSession().setMode('ace/mode/'+mode);
 		editor.getSession().setValue(value);
-		editor.getSession().setOptions({ tabSize: 4, useSoftTabs: false });
+		editor.getSession().setOptions({ tabSize: 4, useSoftTabs: true });
 		editor.getSession().on('change',function() {
 			$textarea.val(editor.getSession().getValue()).change();
 		});