diff --git a/CMakeLists.txt b/CMakeLists.txt
index a9d69a5..eb195e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,9 @@ project(CgeFile LANGUAGES C)
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 
-set(SOURCES)
+set(SOURCES
+    src/File.c
+)
 
 set(SOURCES_WIN32
     src/win32/File.c