diff --git a/Makefile.template b/Makefile.template
index 59de553..0ed283d 100644
--- a/Makefile.template
+++ b/Makefile.template
@@ -8,15 +8,15 @@ include VERSION
 #
 # Where to install the program, data files, and manuals
 #
-prefix  = /usr/local
+prefix  = @GENTOO_PORTAGE_EPREFIX@/usr/
 bindir  = $(prefix)/bin
 datadir = $(prefix)/share/Raster3D/materials
 mandir  = $(prefix)/man/manl
-htmldir = $(prefix)/share/Raster3D/html
+htmldir = $(prefix)/share/doc/MYPF/html
 examdir = $(prefix)/share/Raster3D/examples
 
-INCDIRS  =	-I/usr/include -I/usr/local/include
-LIBDIRS  =	-L/usr/local/lib
+INCDIRS  =	-I@GENTOO_PORTAGE_EPREFIX@/usr/include
+LIBDIRS  =	-L@GENTOO_PORTAGE_EPREFIX@/usr/MYLIB
 
 #
 # TIFF support (enabled by default)