diff --git a/libavformat/mpjpeg.c b/libavformat/mpjpeg.c
index 3904ccb2b4..80f83c5871 100644
--- a/libavformat/mpjpeg.c
+++ b/libavformat/mpjpeg.c
@@ -23,7 +23,7 @@
 
 /* Multipart JPEG */
 
-#define BOUNDARY_TAG "ffserver"
+#define BOUNDARY_TAG "ffmpeg"
 
 typedef struct MPJPEGContext {
     AVClass *class;