diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2096a51..2827db8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,7 @@
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.5)
 
 project(KIMA2)
 
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
 if(MSVC)
   add_compile_options(/W4 /WX)
 else()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2f3bcac..1ea1c18 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,2 +1 @@
-add_subdirectory("core")
-add_subdirectory("gui")
\ No newline at end of file
+add_subdirectory("core")
\ No newline at end of file
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 01edba3..57a7a7a 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -1,7 +1,4 @@
 
-
-find_package(Boost 1.62 REQUIRED)
-
 set(CORE_HEADERS
     entity.h
 )
@@ -9,5 +6,4 @@ set(CORE_SOURCES
     entity.cpp
 )
 
-add_library(core STATIC ${CORE_SOURCES})
-target_link_libraries(core Boost::boost)
\ No newline at end of file
+add_library(core STATIC ${CORE_SOURCES})
\ No newline at end of file
diff --git a/src/core/entity.cpp b/src/core/entity.cpp
index 4c9ece5..cb9925d 100644
--- a/src/core/entity.cpp
+++ b/src/core/entity.cpp
@@ -1,7 +1,6 @@
 #include "entity.h"
 
-#include <boost/uuid/uuid_generators.hpp>
-
-Entity::Entity() : uuid(boost::uuids::random_generator()())
+Entity::Entity()
 {
+
 }
\ No newline at end of file
diff --git a/src/core/entity.h b/src/core/entity.h
index e7afcbe..ab68b40 100644
--- a/src/core/entity.h
+++ b/src/core/entity.h
@@ -1,18 +1,13 @@
 #ifndef ENTITY_H
 #define ENTITY_H
 
-#include <string>
-
-#include <boost/uuid/uuid.hpp>
-
 class Entity
 {
 public:
     Entity();
     ~Entity();
-    const boost::uuids::uuid& getUuid() {return uuid;};
 private:
-    boost::uuids::uuid uuid;
+    int uuid{-1};
 };
 
 #endif //ENTITY_H
\ No newline at end of file
diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
deleted file mode 100644
index bb66887..0000000
--- a/src/gui/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-
-set(GUI_HEADERS
-    
-)
-set(GUI_SOURCES
-    kima2.cpp
-)
-
-add_executable(kima2 ${GUI_SOURCES})
-target_link_libraries(kima2 core)
\ No newline at end of file
diff --git a/src/gui/kima2.cpp b/src/gui/kima2.cpp
deleted file mode 100644
index bc69ee4..0000000
--- a/src/gui/kima2.cpp
+++ /dev/null
@@ -1,7 +0,0 @@
-
-
-int main()
-{
-    /* code */
-    return 0;
-}