diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01009d5..ef7596d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ link_directories(${PROJECT_SOURCE_DIR}/src)
 
 add_executable(code ${main_src}) # Add all *.cpp file after src/main.cpp, like src/Evalvisitor.cpp did
 target_include_directories(code PRIVATE ${PROJECT_SOURCE_DIR}/libs)
-target_precompile_headers(code PUBLIC ${PROJECT_SOURCE_DIR}/libs/clipp/clipp.h ${PROJECT_SOURCE_DIR}/libs/json/json.hpp)
+target_precompile_headers(code PUBLIC ${PROJECT_SOURCE_DIR}/libs/clipp/clipp.h ${PROJECT_SOURCE_DIR}/libs/json/json.hpp ${PROJECT_SOURCE_DIR}/libs/int2048/int2048.h)
 target_link_directories(code PRIVATE ${PROJECT_SOURCE_DIR}/libs/int2048)
 target_link_libraries(code int2048)
 
diff --git a/src/main.cpp b/src/main.cpp
index 80e8978..cecdff2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,7 +3,6 @@
 #include "Python3Parser.h"
 #include "antlr4-runtime.h"
 #include <iostream>
-#include "int2048/int2048.h"
 #include "clipp/clipp.h"
 using namespace antlr4;
 // TODO: regenerating files in directory named "generated" is dangerous.