diff --git a/Makefile b/Makefile
index 836f29e..f3622f8 100755
--- a/Makefile
+++ b/Makefile
@@ -2,9 +2,11 @@ DESTDIR=$(shell pwd)
 ARCH=$(shell getconf LONG_BIT)
 VMDVER="1.9.4a55"
 OPTIX=""
+OSPRAY=""
 ifeq ($(ARCH),64)
 	PLUGINTEXT=LINUXAMD64
 	#OPTIX=LIBOPTIX #Uncomment this if you want to add in the OptiX renderer. 
+	#OSPRAY=LIBOSPRAY2 #Uncomment this if you want to add in the OSPRAY renderer.
 else
 	PLUGINTEXT=LINUX
 endif
@@ -27,10 +29,10 @@ copyvmd:
 
 compilevmd: copyvmd
 	cd vmd; \
-	./configure $(PLUGINTEXT) OPENGL TK FLTK IMD ACTC XINERAMA LIBTACHYON ZLIB LIBPNG NETCDF TCL PYTHON PTHREADS NUMPY COLVARS LIBOSPRAY2 ; \
+	./configure $(PLUGINTEXT) OPENGL TK FLTK IMD ACTC XINERAMA LIBTACHYON ZLIB LIBPNG NETCDF TCL PYTHON PTHREADS NUMPY COLVARS $(OSPRAY) ; \
 	cd src ; make -j
 	cd vmd-cuda; \
-	./configure $(PLUGINTEXT) OPENGL TK FLTK IMD ACTC XINERAMA LIBTACHYON ZLIB LIBPNG NETCDF TCL PYTHON PTHREADS NUMPY COLVARS LIBOSPRAY2 CUDA  $(OPTIX); \
+	./configure $(PLUGINTEXT) OPENGL TK FLTK IMD ACTC XINERAMA LIBTACHYON ZLIB LIBPNG NETCDF TCL PYTHON PTHREADS NUMPY COLVARS $(OSPRAY) CUDA  $(OPTIX); \
 	cd src ; make -j
 
 installplugins: