diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0bd11c5..44dcda2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,10 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(GTEST_VERSION 1.17.0)
 enable_testing()
 
+if (MSVC)
+    message(FATAL_ERROR "MSVC is not supported. Please use GCC or Clang.")
+endif ()
+
 include_directories(include)
 
 include(FetchContent)
@@ -74,10 +78,10 @@ set(EXECUTABLE_SOURCES
         "${CMAKE_SOURCE_DIR}/src/3110.c"
 )
 
-foreach(src_file IN LISTS EXECUTABLE_SOURCES)
+foreach (src_file IN LISTS EXECUTABLE_SOURCES)
     get_filename_component(exe_name "${src_file}" NAME_WE)
     add_executable(${exe_name} ${src_file})
-endforeach()
+endforeach ()
 
 set(LIBRARY_SOURCES)