diff --git a/bsd-core/drm_os_freebsd.h b/bsd-core/drm_os_freebsd.h
index 5ddac18b..0f2530aa 100644
--- a/bsd-core/drm_os_freebsd.h
+++ b/bsd-core/drm_os_freebsd.h
@@ -192,6 +192,10 @@ while (!condition) {							\
 
 #define PAGE_ALIGN(addr) round_page(addr)
 
+#ifndef M_WAITOK		/* M_WAITOK (=0) name removed in -current */
+#define M_WAITOK 0
+#endif
+
 #define malloctype DRM(M_DRM)
 /* The macros confliced in the MALLOC_DEFINE */
 MALLOC_DECLARE(malloctype);
diff --git a/bsd/drm_os_freebsd.h b/bsd/drm_os_freebsd.h
index 5ddac18b..0f2530aa 100644
--- a/bsd/drm_os_freebsd.h
+++ b/bsd/drm_os_freebsd.h
@@ -192,6 +192,10 @@ while (!condition) {							\
 
 #define PAGE_ALIGN(addr) round_page(addr)
 
+#ifndef M_WAITOK		/* M_WAITOK (=0) name removed in -current */
+#define M_WAITOK 0
+#endif
+
 #define malloctype DRM(M_DRM)
 /* The macros confliced in the MALLOC_DEFINE */
 MALLOC_DECLARE(malloctype);