diff --git a/rton-json/CMakeLists.txt b/rton-json/CMakeLists.txt
index 30de699..6091d11 100644
--- a/rton-json/CMakeLists.txt
+++ b/rton-json/CMakeLists.txt
@@ -6,19 +6,14 @@ set(CMAKE_DISABLE_SOURCE_CHANGES ON)
 set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
 
 set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os")
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 	set(CMAKE_CXX_FLAGS
 		"${CMAKE_CXX_FLAGS}\
+		-Os\
 		-Wall -Wextra -Werror -pedantic\
 		-static\
 		-s")
-elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-	set(CMAKE_CXX_FLAGS
-		"${CMAKE_CXX_FLAGS}\
-		-W4 -WX\
-		-MT")
 endif()
 
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}")
@@ -35,13 +30,7 @@ endif()
 set(JSON_BuildTests OFF CACHE INTERNAL "")
 
 # require fifo_map
-find_package(nlohmann-fifo-map QUIET)
-if (nlohmann-fifo-map_FOUND)
-	message(STATUS "FOUND nlohmann-fifo-map ${nlohmann-fifo-map_VERSION}")
-else()
-	add_subdirectory(third_party/fifo_map)
-	message(STATUS "Using external nlohmann-fifo-map")
-endif()
+add_subdirectory(third_party/fifo_map)
 
 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
 add_executable(rton-json ${SOURCES})
diff --git a/rton-json/include/rton-json.hpp b/rton-json/include/rton-json.hpp
index 5830b6c..bec2991 100644
--- a/rton-json/include/rton-json.hpp
+++ b/rton-json/include/rton-json.hpp
@@ -5,7 +5,7 @@
 
 #include "include/json_fifo.hpp"
 
-const std::string architecture = std::to_string(uint16_t(log2(INTPTR_MAX))+1) + "-bit";
+const std::string architecture = std::to_string(uint16_t(round(log2(UINTPTR_MAX)))) + "-bit";
 const std::string ver = "3.1.0";
 
 std::string to_hex_string(const uint64_t &q);
diff --git a/rton-json/src/json2rton.cpp b/rton-json/src/json2rton.cpp
index 5dc091c..f2550d4 100644
--- a/rton-json/src/json2rton.cpp
+++ b/rton-json/src/json2rton.cpp
@@ -1,5 +1,6 @@
 #include "include/json2rton.hpp"
 
+#include <sstream>
 #include <regex>
 
 #include "include/error.hpp"
diff --git a/rton-json/src/main.cpp b/rton-json/src/main.cpp
index b9bf1cb..9c2c386 100644
--- a/rton-json/src/main.cpp
+++ b/rton-json/src/main.cpp
@@ -161,7 +161,7 @@ int main(const int argc, const char *argv[]){
     std::cout << std::endl
               << "rton-json made by H3x4n1um" << std::endl
               << std::endl
-              << "Version: " << ver << " " << architecture << " executable" << std::endl
+              << "Version: " << ver << " " << architecture << std::endl
               << "Compiled on " << __DATE__ << " at " << __TIME__ << std::endl
               << "Credits: nlohmann for his awesome JSON parser and fifo_map" << std::endl
               << std::endl;