diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bdccbee..70017c8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,6 +17,7 @@ add_executable(sysyc
   IR.cpp
   SysYIRGenerator.cpp
   Backend.cpp
+  LLVMIRGenerator.cpp
 )
 target_include_directories(sysyc PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 target_link_libraries(sysyc PRIVATE SysYParser)