diff --git a/GNUmakefile b/GNUmakefile
index 2c7856db7b4..accedbbbe4b 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -276,7 +276,10 @@ ifndef NPROCS
 	ifeq ($(OS), Linux)
 		NPROCS:=$(shell nproc)
 	endif
-	ifneq (,$(filter $(OS),Darwin FreeBSD NetBSD))
+	ifeq ($(OS), NetBSD)
+		NPROCS:=$(shell getconf NPROCESSORS_ONLN)
+	endif
+	ifneq (,$(filter $(OS),Darwin FreeBSD))
 		NPROCS:=$(shell sysctl -n hw.ncpu)
 	endif
 endif
diff --git a/source/blender/blenloader/intern/readfile.h b/source/blender/blenloader/intern/readfile.h
index 10ee3d52a74..fb307f6bde3 100644
--- a/source/blender/blenloader/intern/readfile.h
+++ b/source/blender/blenloader/intern/readfile.h
@@ -53,7 +53,7 @@ enum eFileDataFlag {
 #  pragma GCC poison off_t
 #endif
 
-#if defined(_MSC_VER) || defined(__APPLE__) || defined(__HAIKU__)
+#if defined(_MSC_VER) || defined(__APPLE__) || defined(__HAIKU__) || defined(__NetBSD__)
 typedef int64_t off64_t;
 #endif