diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4dc8e9a9d..574a56577 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ file(GLOB RENDERER_SRC ${CMAKE_SOURCE_DIR}/src/gba/renderers/video-software.c)
 file(GLOB SIO_SRC ${CMAKE_SOURCE_DIR}/src/gba/sio/lockstep.c)
 file(GLOB THIRD_PARTY_SRC ${CMAKE_SOURCE_DIR}/src/third-party/inih/*.c)
 list(APPEND UTIL_SRC ${CMAKE_SOURCE_DIR}/src/platform/commandline.c)
-set(VFS_SRC)
+set(VFS_SRC ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-mem.c)
 source_group("ARM core" FILES ${ARM_SRC})
 source_group("GBA board" FILES ${GBA_SRC} ${RENDERER_SRC} ${SIO_SRC})
 source_group("GBA supervisor" FILES ${GBA_SV_SRC} ${GBA_RR_SRC})