diff --git a/CMakeLists.txt b/CMakeLists.txt
index 92862a9..730b399 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,6 @@ cmake_minimum_required(VERSION 3.9)
 project(MultiRename)
 
 set(CMAKE_CXX_COMPILER "g++")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pthread")
 set(CMAKE_CXX_STANDARD 17)
 
 add_executable(main
diff --git a/main.cpp b/main.cpp
index 02a8aa6..28457e9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include <windows.h>
 #include <iostream>
 #include <filesystem>
+#include <sstream>
 #include <vector>
 #include <string>
 #include <set>