diff --git a/Makefile b/Makefile
index f41c8840..20e0f3fa 100644
--- a/Makefile
+++ b/Makefile
@@ -43,6 +43,7 @@ ifdef CPACK_BUNDLE
 	CPACK_FLAGS=-DWithPackageBUNDLE=ON
 endif
 
+NPROCS = 1
 ifndef NPROCS
 ifeq ($(OS),Linux)
 	NPROCS:=$(shell grep -c ^processor /proc/cpuinfo)