diff -Nur nvidia-driver.orig/Makefile nvidia-driver/Makefile
--- nvidia-driver.orig/Makefile	2013-08-10 14:46:08.000000000 +0200
+++ nvidia-driver/Makefile	2013-08-10 14:41:52.000000000 +0200
@@ -158,8 +158,8 @@
 .endif
 # Catch up with KVA space allocation API changes in recent -CURRENT
 .if ${OSVERSION} > 1000040
-	${REINPLACE_CMD} -e 's/kmem_free(kernel_map,/kva_free(/ ; \
-		/kmem_alloc_contig/s/map/arena/' ${WRKSRC}/src/nvidia_subr.c
+	${REINPLACE_CMD} -e 's/kmem_free(kernel_map,/kmem_free(kmem_arena,/ ; \
+		/kmem_alloc_contig/s/kernel_map/kmem_arena/' ${WRKSRC}/src/nvidia_subr.c
 .endif
 # Process OPTIONS
 .if ${PORT_OPTIONS:MFREEBSD_AGP}