diff --git a/argcracker/CMakeLists.txt b/argcracker/CMakeLists.txt
index cf72095..8b4142a 100644
--- a/argcracker/CMakeLists.txt
+++ b/argcracker/CMakeLists.txt
@@ -2,14 +2,14 @@ add_executable(argcracker src/main.cpp src/tickcount.cpp)
 target_link_libraries(argcracker PUBLIC Qt5::Core ${LIBRARIES} physis z)
 target_include_directories(argcracker PUBLIC include)
 
-if(APPLE)
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
     target_compile_definitions(argcracker PUBLIC MACOS)
 endif()
 
-if(WIN32)
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
     target_compile_definitions(argcracker PUBLIC WIN32)
 endif()
 
-if(LINUX)
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     target_compile_definitions(argcracker PUBLIC LINUX)
 endif()
\ No newline at end of file
diff --git a/argcracker/src/tickcount.cpp b/argcracker/src/tickcount.cpp
index 9ab4356..e28092c 100644
--- a/argcracker/src/tickcount.cpp
+++ b/argcracker/src/tickcount.cpp
@@ -1,3 +1,5 @@
+#include <cstdint>
+
 #if defined(MACOS)
 #include <sys/sysctl.h>
 #include <mach/mach_time.h>
@@ -22,6 +24,8 @@ uint32_t TickCount() {
 #endif
 
 #if defined(LINUX)
+#include <ctime>
+
 uint32_t TickCount() {
     struct timespec ts;