Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision 53bb8f1f8cae8a384c5024ab0caed57d27778a0d)
+++ doc/bibliography/pl.bib	(revision a2545593137e288316609427d04f855ae152cc3b)
@@ -1146,5 +1146,5 @@
     author	= {Tarditi, David and Elliott, Archibald Samuel and Ruef, Andrew and Hicks, Michael},
     title	= {Checked C: Making C Safe by Extension},
-    booktitle	= {2018 IEEE Cybersecurity Development (SecDev)}
+    booktitle	= {2018 IEEE Cybersecurity Development (SecDev)},
     year = {2018},
     month = {September},