diff --git a/dita/RTC-NG/API/class_rtcimage.dita b/dita/RTC-NG/API/class_rtcimage.dita
index dc27ebd2043..fb03befc63b 100644
--- a/dita/RTC-NG/API/class_rtcimage.dita
+++ b/dita/RTC-NG/API/class_rtcimage.dita
@@ -109,7 +109,7 @@ struct FRtcImage
 		
 		char* URLCharPtr = new char[url.Len() + 1];
 		FMemory::Memcpy(URLCharPtr, TCHAR_TO_UTF8(*url), url.Len());
-		URLCharPtr[url.Len()] = '\0';
+		URLCharPtr[url.Len()] = '\0';
 		AgoraData.url = URLCharPtr;
 		AgoraData.x = x;
 		AgoraData.y = y;