diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1656759..7a991dc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -5,7 +5,6 @@ add_subdirectory(peripheral)
 add_subdirectory(system)
 add_subdirectory(startup)
 
-
 add_executable(main
     main.c 
     ch32v20x_it.c
@@ -13,4 +12,5 @@ add_executable(main
 
 target_link_libraries(main 
     core_riscv
+    system_ch32v20x 
 )