diff --git a/tex/UTB.tex b/tex/UTB.tex
index b7d847e..3c458f2 100644
--- a/tex/UTB.tex
+++ b/tex/UTB.tex
@@ -188,7 +188,10 @@
 			pdflang=la,
 			pdfapart=3,
 			pdfaconformance=B,
-			pdflang={en}
+			pdflang={en},
+			% use breaklinks to make have long bibtex urls broken
+			% otherwise they go over the margin (known issue)
+			breaklinks=true
 		}
 	\fi \fi