diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index 074e1d2c..e6c1d060 100644
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -270,6 +270,7 @@ extern struct cfdriver drm_cd;
 #endif
 
 typedef unsigned long dma_addr_t;
+typedef u_int64_t u64;
 typedef u_int32_t u32;
 typedef u_int16_t u16;
 typedef u_int8_t u8;