diff --git a/src/src.proj b/src/src.proj
index c236498a9..8a8249b97 100644
--- a/src/src.proj
+++ b/src/src.proj
@@ -309,6 +309,7 @@ LIB mktcommon
   SOURCE common/dts.cpp
   SOURCE common/endian.cpp
   SOURCE common/extern_data.cpp
+  SOURCE common/file_types.cpp
   SOURCE common/fs_sys_helpers.cpp
   SOURCE common/hacks.cpp
   SOURCE common/id3.cpp