diff --git a/en-US/dita/RTC-NG/config/keys-rtc-ng-api-cpp.ditamap b/en-US/dita/RTC-NG/config/keys-rtc-ng-api-cpp.ditamap
index ce8cc9b9638..4f58346090e 100644
--- a/en-US/dita/RTC-NG/config/keys-rtc-ng-api-cpp.ditamap
+++ b/en-US/dita/RTC-NG/config/keys-rtc-ng-api-cpp.ditamap
@@ -12140,6 +12140,9 @@
             <topicmeta>
                 <keywords>
                     <keyword>PREVIEW</keyword>
+                 </keywords>
+                </topicmeta>
+        </keydef>
         <keydef keys="RtePlayerEvent" href="../API/enum_rteplayerevent.dita">
             <topicmeta>
                 <keywords>