diff --git a/article.swimmer-framework-contact.springer.tex b/article.swimmer-framework-contact.springer.tex
index 4d657f8..5b81cd2 100644
--- a/article.swimmer-framework-contact.springer.tex
+++ b/article.swimmer-framework-contact.springer.tex
@@ -42,7 +42,6 @@
 \newcommand{\review}[1]{\textcolor{blue}{#1}}
 
 % see the list of further useful packages
-\newcommand{\feelpp}{\texttt{Feel++}}
 \newcommand{\Fluid}{\mathcal{F}} % fluid domain
 \newcommand{\Real}{\mathbb{R}} % real number space
 \newcommand{\Alemap}{\mathcal{A}} % Ale map