diff --git a/graphics/nvidia-drm-515-kmod/files/patch-nvidia-drm-conftest.h b/graphics/nvidia-drm-515-kmod/files/patch-nvidia-drm-conftest.h
new file mode 100644
index 000000000000..6809b4bfdfc0
--- /dev/null
+++ b/graphics/nvidia-drm-515-kmod/files/patch-nvidia-drm-conftest.h
@@ -0,0 +1,14 @@
+--- nvidia-drm-conftest.h.orig	2024-02-22 01:03:15 UTC
++++ nvidia-drm-conftest.h
+@@ -85,7 +85,11 @@
+ 
+ /* For nv_drm_gem_prime_force_fence_signal */
+ #ifndef spin_is_locked
++#if __FreeBSD_version < 1500018
+ #define spin_is_locked(lock) mtx_owned(lock.m)
++#else
++#define spin_is_locked(lock) mtx_owned(lock)
++#endif
+ #endif
+ 
+ #ifndef rwsem_is_locked