diff --git a/libmpdemux/Makefile b/libmpdemux/Makefile
index ff6b288380..ab6191554f 100644
--- a/libmpdemux/Makefile
+++ b/libmpdemux/Makefile
@@ -30,7 +30,7 @@ ifeq ($(MATROSKA_INTERNAL),yes)
 SRCS += demux_mkv.c ebml.c
 endif
 ifeq ($(MATROSKA_EXTERNAL),yes)
-CPLUSPLUSSRCS += demux_mkv.cpp
+CPLUSPLUSSRCS += demux_mkv_old.cpp
 endif
 
 
diff --git a/libmpdemux/demux_mkv.cpp b/libmpdemux/demux_mkv_old.cpp
similarity index 100%
rename from libmpdemux/demux_mkv.cpp
rename to libmpdemux/demux_mkv_old.cpp