diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index c6ebbb190d..9656926c05 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -16,7 +16,7 @@ extern "C" {
 #include <sys/types.h> /* size_t */
 
 #define FFMPEG_VERSION_INT     0x000409
-#define FFMPEG_VERSION         "0.4.9-pre1"
+#define FFMPEG_VERSION         "CVS"
 #define LIBAVCODEC_BUILD       4757
 
 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT