diff --git a/doc/Makefile b/doc/Makefile
index f5deefd..cb3eecc 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -4,6 +4,7 @@ FILE  = Thesis
 all:
 	pdflatex $(FILE)
 	bibtex $(FILE)
+	makeindex Thesis.nlo -s nomencl.ist -o Thesis.nls
 	pdflatex $(FILE)
 	pdflatex $(FILE)