diff --git a/code/nel/src/sound/CMakeLists.txt b/code/nel/src/sound/CMakeLists.txt
index f0417754c..7b9eebc9f 100644
--- a/code/nel/src/sound/CMakeLists.txt
+++ b/code/nel/src/sound/CMakeLists.txt
@@ -3,7 +3,7 @@ FILE(GLOB HEADERS ../../include/nel/sound/*.h)
 
 IF(NOT FFMPEG_FOUND)
   LIST(REMOVE_ITEM SRC ${CMAKE_CURRENT_SOURCE_DIR}/audio_decoder_ffmpeg.cpp)
-  LIST(REMOVE_ITEM HEADERS ${CMAKE_CURRENT_SOURCE_DIR}../../include/nel/sound/audio_decoder_ffmpeg.h)
+  LIST(REMOVE_ITEM HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../../include/nel/sound/audio_decoder_ffmpeg.h)
 ENDIF()
 
 FILE(GLOB ANIMATION
diff --git a/code/nel/src/sound/audio_decoder_ffmpeg.cpp b/code/nel/src/sound/audio_decoder_ffmpeg.cpp
index 50acb17cc..dea8368d2 100644
--- a/code/nel/src/sound/audio_decoder_ffmpeg.cpp
+++ b/code/nel/src/sound/audio_decoder_ffmpeg.cpp
@@ -26,10 +26,15 @@ extern "C"
 #include <libavformat/avformat.h>
 #include <libswresample/swresample.h>
 #include <libavutil/opt.h>
-};
+}
 
 using namespace std;
 using namespace NLMISC;
+using namespace NLSOUND;
+
+// Visual Studio does not support AV_TIME_BASE_Q macro in C++
+#undef AV_TIME_BASE_Q
+static const AVRational AV_TIME_BASE_Q = {1, AV_TIME_BASE};
 
 namespace {