diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05326b8bb7..a49f8e7b8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,9 +36,8 @@ if (PLATFORM_OPENBSD)
 elseif (PLATFORM_NETBSD)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R7/include")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I${CMAKE_SYSROOT}/usr/X11R7/include")
-    if (NOT CXX_GCC)
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/pkg/include/c++/v1")
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I${CMAKE_SYSROOT}/usr/pkg/include/c++/v1")
+    if (NOT CXX_GCC OR CMAKE_CXX_COMPILER_VERSION VERSION_LESS "14.0")
+        message(FATAL_ERROR "You must use gcc14 (or newer) from pkgin; feel free to fix clang yourself otherwise.")
     endif()
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L${CMAKE_SYSROOT}/usr/X11R7/lib")
 endif()