diff --git a/latex/references/references.bib b/latex/references/references.bib
index 1f37d96..d106fc7 100644
--- a/latex/references/references.bib
+++ b/latex/references/references.bib
@@ -101,7 +101,7 @@
     author = {Ludwig-Maximilians-Universität München},
     title = {Penning traps},
     url = {https://www.med.physik.uni-muenchen.de/research/nuclear-science/nuclear-masses/mlltrap/layout/traps/index.html},
-    urldate = {2023-10-23}
+    urldate = {2023-10-23},
     note = {Configuration figure a}
 }
 
@@ -110,4 +110,4 @@
     url = {https://github.uio.no/FYS3150-G2-2023/Project-3},
     urldate = {2023-10-24},
     note = {Complete repo of project 3}
-}
\ No newline at end of file
+}