diff --git a/doc/graphslam-engine-guide/Makefile b/doc/graphslam-engine-guide/Makefile
index 9bc6438caf..54758c5fa7 100644
--- a/doc/graphslam-engine-guide/Makefile
+++ b/doc/graphslam-engine-guide/Makefile
@@ -24,4 +24,5 @@ graphslam-engine-guide.ps.gz: graphslam-engine-guide.pdf
 
 clean:
 	latexmk -CA
+	rm *.bbl *.nlo