diff --git a/src/peripheral/CMakeLists.txt b/src/peripheral/CMakeLists.txt
index d4f82c3..b921584 100644
--- a/src/peripheral/CMakeLists.txt
+++ b/src/peripheral/CMakeLists.txt
@@ -99,11 +99,6 @@ add_library(ch32v20x_flash SHARED
 target_include_directories(ch32v20x_flash PUBLIC ./inc)
 
 
-add_library(ch32v20x_flash SHARED
-    src/ch32v20x_flash.c
-)
-
-
 add_library(ch32v20x_iwdg SHARED
     src/ch32v20x_iwdg.c
 )