diff --git a/libavcodec/common.h b/libavcodec/common.h
index dadc184447..e2bec49218 100644
--- a/libavcodec/common.h
+++ b/libavcodec/common.h
@@ -88,6 +88,7 @@ typedef INT64 int64_t;
 #    endif
 
 #    define snprintf _snprintf
+#    define vsnprintf _vsnprintf
 
 /* CONFIG_WIN32 end */
 #elif defined (CONFIG_OS2)