diff --git a/joss/paper.bib b/joss/paper.bib
index 8f2c399..4e46a3d 100644
--- a/joss/paper.bib
+++ b/joss/paper.bib
@@ -289,7 +289,7 @@ @misc{nda
   journal = {GitHub repository},
   ublisher = {GitHub},
 	url = {https://github.com/TRIQS/nda},
-	title = {nda: C++ library for multi-dimensional arrays}}
+	title = {{nda}: C++ library for multi-dimensional arrays}}
 
 @article{wallerberger23,
 title = {sparse-ir: Optimal compression and sparse sampling of many-body propagators},