diff --git a/packages/macros.sty b/packages/macros.sty
index 35cdbcf..d7a6369 100644
--- a/packages/macros.sty
+++ b/packages/macros.sty
@@ -54,6 +54,7 @@
 \newenvironment{corollary_sq}{\begin{mdframed}\begin{corollary}}{\end{corollary}\end{mdframed}}
 \newcommand{\norm}[1]{\lVert#1\rVert}
 \newcommand{\Norm}[1]{\lVert #1\rVert}
+\newcommand{\matrixnorm}[1]{\lVert#1\rVert}
 \newcommand{\powerset}[1]{\mathcal{P}(#1)} % Power set
 \newcommand{\converges}{\rightarrow}
 \newcommand{\equivalence}{\Longleftrightarrow}