diff --git a/libobs/cmake/legacy.cmake b/libobs/cmake/legacy.cmake
index d3f307a57..9ecaf7a84 100644
--- a/libobs/cmake/legacy.cmake
+++ b/libobs/cmake/legacy.cmake
@@ -176,6 +176,8 @@ target_sources(
           util/bitstream.h
           util/bmem.c
           util/bmem.h
+          util/buffered-file-serializer.c
+          util/buffered-file-serializer.h
           util/c99defs.h
           util/cf-lexer.c
           util/cf-lexer.h